ermine vs shorttail weasel

ermine and shorttail weasel both are nouns.

Word	Noun	Adjective	Verb	Adverb
ermine	Yes	No	No	No
shorttail weasel	Yes	No	No	No

As nouns, ermine and shorttail weasel are synonyms defined as:

ermine and shorttail weasel: mustelid of Northern Hemisphere in its white winter coat

Other synonyms of ermine include Mustela erminea.

ermine (noun)	shorttail weasel (noun)
mustelid of Northern Hemisphere in its white winter coat	mustelid of Northern Hemisphere in its white winter coat
the expensive white fur of the ermine