Vocabulary

thumb|upright=1.7|right|King Charles V of France|Charles V the Wise commissions a translation of [[Aristotle. First square shows his ordering the translation; second square, the translation being made. Third and fourth squares show the finished translation being brought to, and then presented to, the King.]]

A vocabulary (also known as a lexicon) is a set of words, typically the set in a language or the set known to an individual. The word vocabulary originated from the Latin , meaning "a word, name". It forms an essential component of language and communication, helping convey thoughts, ideas, emotions, and information. Vocabulary can be oral, written, or signed and can be categorized into two main types: active vocabulary (words one uses regularly) and passive vocabulary (words one recognizes but does not use often). An individual's vocabulary continually evolves through various methods, includi

A lexicon (, rarely lexica) is the vocabulary of a language or branch of knowledge (such as nautical or medical). In linguistics, a lexicon is a language's inventory of lexemes. The word lexicon derives from Greek word (), neuter of () meaning 'of or for words'.

base form of a word plus its inflected forms and derived forms made from affixes

word that is broadly obsolete but remains in current use due to its presence within an idiom

word created by error in a dictionary or other authoritative work

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sino-Barbarian vocabulary