variant vs chance variable

variant and chance variable both are nouns.

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

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

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

variant (noun)	chance variable (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

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