gerbil vs gerbille

gerbil and gerbille both are nouns.

Word	Noun	Adjective	Verb	Adverb
gerbil	Yes	No	No	No
gerbille	Yes	No	No	No

As nouns, gerbil and gerbille are synonyms defined as:

gerbil and gerbille: small Old World burrowing desert rodent with long soft pale fur and hind legs adapted for leaping

gerbil (noun)	gerbille (noun)
small Old World burrowing desert rodent with long soft pale fur and hind legs adapted for leaping	small Old World burrowing desert rodent with long soft pale fur and hind legs adapted for leaping