shrewmouse vs shrew

shrewmouse and shrew both are nouns.

Word	Noun	Adjective	Verb	Adverb
shrewmouse	Yes	No	No	No
shrew	Yes	No	No	No

As nouns, shrewmouse and shrew are synonyms defined as:

shrewmouse and shrew: small mouselike mammal with a long snout; related to moles

shrewmouse (noun)	shrew (noun)
small mouselike mammal with a long snout; related to moles	small mouselike mammal with a long snout; related to moles
	a scolding nagging bad-tempered woman