Business is a related term of contest.
In countable|lang=en terms the difference between business and contest
is that
business is (countable) an objective or a matter needing to be dealt with while
contest is (countable) a competition.
In uncountable|lang=en terms the difference between business and contest
is that
business is (uncountable) something involving one personally while
contest is (uncountable) struggle for superiority; combat.
As nouns the difference between business and contest
is that
business is (countable) a specific commercial enterprise or establishment while
contest is (uncountable) controversy; debate.
As an adjective business
is of, to, pertaining to or utilized for purposes of conducting trade, commerce, governance, advocacy or other professional purposes.
As a verb contest is
to contend.