Broad-concept articles

A fellow is a title and form of address for distinguished, learned, or skilled individuals in academia, medicine, research, and industry. The exact meaning of the term differs in each field. In learned or professional societies, the term refers to a privileged member who is specially elected in recognition of their work and achievements. Within institutions of higher education, a fellow is a member of a highly ranked group of teachers at a particular college or university or a member of the governing body in some universities. It can also be a specially selected postgraduate student who has be

thumb|U.S. soldier at camp during World War II thumb|upright|Loose lips might sink ships, World War II slogan Secrecy is the practice of hiding information from certain individuals or groups who do not have the "need to know", perhaps while sharing it with other individuals. That which is kept hidden is known as the secret.

Gibberish, also known as jibber-jabber or gobbledygook, is speech that is (or appears to be) nonsense: ranging across speech sounds that are not actual words, pseudowords, language games, and specialized jargon that seems nonsensical to outsiders.

In mathematics, the term linear is used in two distinct senses for two different properties: linearity of a function (or mapping); linearity of a polynomial. An example of a linear function is the function defined by f(x)=(ax,bx) that maps the real line to a line in the Euclidean plane R2 that passes through the origin. An example of a linear polynomial in the variables X, Y and Z is aX+bY+cZ+d.

scale of objects and events smaller than those that can easily be seen by the naked eye, requiring a lens or microscope to see them clearly

indication of size and mounting options of a computer or its components

enslavement of people of European descent

thumb|right|Stultitia by Giotto—from his [[fresco of seven virtues and their opposite vices in the Scrovegni Chapel. Stultitia (folly) was shown as the opposite of Prudentia (prudence).]] Foolishness is the inability or failure to act following reason due to lack of judgment, stupidity, stubbornness, etc. The things such as impulsivity and/or influences may affect a person's ability to make reasonable decisions. Other reasons of apparent foolishness include naivety, gullibility, and credulity. Foolishness differs from stupidity, which is the lack of intelligence. An act of foolishness is calle

displacement of a human or animal population

product total life in use from the point of sale to the point of discard

substance within a material differing from its overall composition

thumb|The Manx Electric Railway on the [[Isle of Man still operates with its original tramcars and trailers, all of which are over one hundred years old, the latest dating from 1906.]]

custom, convention, product, or system that holds a dominant position by public acceptance or market forces

An adulterant is a substance discreetly added to another that may compromise the safety or effectiveness. Consumable products, such as food, cosmetics, pharmaceuticals and fuels, are frequently adulterated to reduce the cost or difficulty of production without the knowledge of the buyer, allowing the product to be sold at the same price as a chemically pure equivalent. The adulteration of street drugs is known as lacing.

Maintainability is the ease of maintaining or providing maintenance for a functioning product or service. Depending on the field, it can have slightly different meanings.

group of muscles that connect the front of the human chest with the bones of the upper arm and shoulder, consisting of pectoralis major, pectoralis minor, and other muscles

Solidarism or solidarist can refer to: The term "solidarism" is applied to the sociopolitical thought advanced by Léon Bourgeois based on ideas by the sociologist Émile Durkheim which is loosely applied to a leading social philosophy operative during and within the French Third Republic before the First World War. The Christian Solidarism of Heinrich Pesch (1854–1926), which became substantially influential on Catholic social teaching, from the Papal Encyclical Quadragesimo Anno and beyond. The Swedish system of labor arrangement in which labor unions and capitalists jointly set wages below

thumb|right|The surface of an apple has various perceptible characteristics, such as curvature, smoothness, texture, color, and shininess; observing these characteristics by sight or touch allows the object to be identified. thumb|right|Water droplet lying on a [[damask. Surface tension is high enough to prevent it passing through the textile.]] thumb|right|The Sun, like all stars, appears from a distance to have a distinct surface, but on closer approach has no set surface. A surface, as the term is most generally used, is the outermost or uppermost layer of a physical object. It is the porti

A peerage is a legal system historically comprising various hereditary titles (and sometimes non-hereditary titles) in a number of countries, and composed of assorted noble ranks.

point beyond which one must continue on the current course because turning back is impossible

An accusation is a statement by one person asserting that another person or entity has done something improper. The person who makes the accusation is an accuser, while the subject against whom it is made is the accused. Whether a statement is interpreted as an accusation may rely on the social environment in which it is made:

several related concepts of rights relating to digital communications

right|thumb|250px|Produce on display at La Boqueria market in [[Barcelona, Spain]] In American English, produce generally refers to fresh fruits and vegetables intended to be eaten by humans, although other food products such as dairy products or nuts are sometimes included. In other English usage, the term "greens" is often used.

mathematical idealization of the surface of a 3D body

An attestation is something that serves to bear witness, confirm, authenticate or verify the validity of some fact or status. An attestor is someone who performs an attestation. An attestation date is the date on which an attestation is performed.

feature of a polytope in the next-lower dimension

condition where there is not enough housing to meet the community's needs

enhanced signal representation in images, videos, audio, or radio

type of music that emphasizes form and stylistic variety

historical-linguistic group of people who speak Finnic languages

cooling using a circulating liquid as a heat-exchange medium

thumb|The common frog, one of the most ubiquitous semiaquatic [[amphibians in Europe]] thumb|Atlantic mudskippers, amphibious fish of [[mangrove swamps and tidal flats]] thumb|Pachygrapsus marmoratus, a semiterrestrial [[crab]] thumb|Hunting stance of Dolomedes minor, a semiaquatic [[spider]]

dualities between elements or properties of electrical circuits, such as between voltage and current

thumb|"Coexist (image)|Coexist" display at a [[U2 concert, containing Islamic, Jewish, and Christian symbols]] Coexistence is the property of things existing at the same time and in a proximity close enough to affect each other, without causing harm to one another. The term is often used with respect to people of different persuasions existing together, particularly where there is some history of antipathy or violence between those groups.

form of theatrical deception

Circles of Apollonius

In philosophy, architectonics is used figuratively (after architecture) to mean "foundational" or "fundamental", supporting the structure of a morality, society, or culture. In Kant's architectonic system there is a progression of phases from the most formal to the most empirical C. S. Peirce adapted the Kantian concept as his blueprint for a pragmatic philosophy. Martial Gueroult wrote of "architectonic unities". Michel Foucault adapted the concept in his treatise The Archaeology of Knowledge.

branding for multiple fast food restaurant chains serving Mexican-style grilled chicken

A facility is a place for doing something, or a place that facilitates an activity. Types of facility include:

Birthright is the concept of things being due to a person upon or by fact of their birth, or due to the order of their birth. These may include rights of citizenship based on the place where the person was born or the citizenship of their parents, and inheritance rights to property owned by parents or others.

thumb|180px|A pair of adjustable dumbbells with plates Weightlifting or weight lifting generally refers to physical exercises and sports in which people lift weights, often in the form of dumbbells, barbells, or machines. People engage in weightlifting for a variety of reasons. These can include: developing physical strength; promoting health and fitness; competing in weightlifting sports; and developing a muscular and aesthetic physique.

220px|thumb|The intersection (red) of two disks (white and red with black boundaries). thumb|right|The circle (black) intersects the line (purple) in two points (red). The disk (yellow) intersects the line in the [[line segment between the two red points.]] 220px|thumb|The intersection of D and E is shown in grayish purple. The intersection of A with any of B, C, D, or E is the empty set.

A cantor or chanter is a person who leads people in singing or sometimes in prayer. Cantor as a profession generally refers to those leading a Jewish congregation, although it also applies to the lead singer or choir director in Christian contexts. In formal Jewish worship, a cantor is a person who sings solo verses or passages to which the choir or congregation responds.

family of methods for parts cleaning and sterilization

least squares approximation of linear functions to data

system of classification rates of the suitability of media for an audience

group of Arabic varieties

Wikimedia disambiguation page

result demonstrating that a particular problem cannot be solved as described in the claim, or that a particular set of problems cannot be solved in general

thumb|right|Penny-farthing bicycle A two-wheeler is a vehicle that runs on two wheels.

nickname of various female monarchs

Finiteness, finitude, or being finite, is the state of being limited or having an end, and is a counter to the concept of infinity. Humans are considered to be in this state because of their limited life span, uniformly ending in death. Each natural number is considered to be in this state, because counting up to that number stops when the number is reached. The concept appears across disciplines, from mathematics and linguistics to philosophy, where it is used to describe quantities, structures, and conditions. In mathematics, a set or number is finite if it is limited in size, while in lingu

mountain ranges that are mostly or entirely under the surface of an ocean.