chance variable vs variate

chance variable and variate both are nouns.

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

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

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

chance variable (noun)	variate (noun)
a variable quantity that is random	a variable quantity that is random