Definition of "Variant" :

noun: something a little different from others of the same type

"A variant of the same word."

noun: a variable quantity that is random

noun: an event that departs from expectations

noun: (biology) a group of organisms within a species that differ in trivial ways from similar groups

adjective: differing from a norm or standard

"A variant spelling."

adjective: exhibiting variation and change

"Letters variant in size."