rivalry

noun

in economics, a phenomenon in which the consumption of some goods prevents their simultaneous consumption by other consumers, occurring for most tangible goods and some nontangible goods (e.g. Internet domains), but not for others (e.g. TV broadcast)
state of two people or groups engaging in a lasting competitive relationship

Pronunciation: /ˈɹaɪ.vəl.ɹi/

Etymology: Etymology tree English rival Middle English -re,-ri,-rie,-ry,-rye English -ry English rivalry From rival + -ry.

An ongoing relationship between (usually two) rivals who compete for superiority.
“The Boston Bruins have a longstanding rivalry with the Montreal Canadiens.”
“James and Polly have a bitter rivalry due to the latter's inclusion in the Tea Time Teaser.”
The characteristic of being a rivalrous good, such that it can be consumed or used by only one person at a time.
“Common goods are those which are rivalrous in consumption but non-excludable”
Any competition between two or more things or factors.
“Binocular rivalry is a visual phenomenon in which perception alternates between different images presented to each eye.”