mouse hare vs rock rabbit

mouse hare and rock rabbit both are nouns.

Word	Noun	Adjective	Verb	Adverb
mouse hare	Yes	No	No	No
rock rabbit	Yes	No	No	No

As nouns, mouse hare and rock rabbit are synonyms defined as:

mouse hare and rock rabbit: small short-eared burrowing mammal of rocky uplands of Asia and western North America

Other synonyms of mouse hare include coney, cony, pika.

mouse hare (noun)	rock rabbit (noun)
small short-eared burrowing mammal of rocky uplands of Asia and western North America	small short-eared burrowing mammal of rocky uplands of Asia and western North America
	hyrax that lives in rocky areas