chance variable vs variant

chance variable and variant both are nouns.

Word	Noun	Adjective	Verb	Adverb
chance variable	Yes	No	No	No
variant	Yes	Yes	No	No

As nouns, chance variable and variant are synonyms defined as:

Other synonyms of chance variable include random variable, stochastic variable, variate.

chance variable (noun)	variant (noun)
a variable quantity that is random	a variable quantity that is random
	something a little different from others of the same type
	an event that departs from expectations
	(biology) a group of organisms within a species that differ in trivial ways from similar groups

chance variable (adjective)	variant (adjective)
	differing from a norm or standard
	exhibiting variation and change