eastern chipmunk vs ground squirrel

eastern chipmunk and ground squirrel both are nouns.

Word	Noun	Adjective	Verb	Adverb
eastern chipmunk	Yes	No	No	No
ground squirrel	Yes	No	No	No

As nouns, eastern chipmunk and ground squirrel are synonyms defined as:

eastern chipmunk and ground squirrel: small striped semiterrestrial eastern American squirrel with cheek pouches

Other synonyms of eastern chipmunk include hackee, striped squirrel, Tamias striatus.

eastern chipmunk (noun)	ground squirrel (noun)
small striped semiterrestrial eastern American squirrel with cheek pouches	any of various terrestrial burrowing rodents of Old and New Worlds; often destroy crops
	small striped semiterrestrial eastern American squirrel with cheek pouches