random variable vs variant

random variable and variant both are nouns.

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

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

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

random 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

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