ground squirrel vs squirrel

ground squirrel and squirrel both are nouns.

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

As nouns, squirrel is a hypernym of ground squirrel; that is, squirrel is a word with a broader meaning than ground squirrel:

ground squirrel: any of various terrestrial burrowing rodents of Old and New Worlds; often destroy crops
squirrel: a kind of arboreal rodent having a long bushy tail

As nouns, squirrel is a hypernym of ground squirrel; that is, squirrel is a word with a broader meaning than ground squirrel:

ground squirrel: small striped semiterrestrial eastern American squirrel with cheek pouches
squirrel: a kind of arboreal rodent having a long bushy tail

ground squirrel (noun)	squirrel (noun)
any of various terrestrial burrowing rodents of Old and New Worlds; often destroy crops	a kind of arboreal rodent having a long bushy tail
small striped semiterrestrial eastern American squirrel with cheek pouches	the fur of a squirrel