polecat vs musteline mammal

polecat and musteline mammal both are nouns.

Word	Noun	Adjective	Verb	Adverb
polecat	Yes	No	No	No
musteline mammal	Yes	No	No	No

As nouns, musteline mammal is a hypernym of polecat; that is, musteline mammal is a word with a broader meaning than polecat:

polecat: dark brown mustelid of woodlands of Eurasia that gives off an unpleasant odor when threatened
musteline mammal: fissiped fur-bearing carnivorous mammals

Other hypernyms of polecat include mustelid, musteline.

As nouns, musteline mammal is a hypernym of polecat; that is, musteline mammal is a word with a broader meaning than polecat:

polecat: American musteline mammal typically ejecting an intensely malodorous fluid when startled; in some classifications put in a separate subfamily Mephitinae
musteline mammal: fissiped fur-bearing carnivorous mammals

Other hypernyms of polecat include mustelid, musteline.

polecat (noun)	musteline mammal (noun)
dark brown mustelid of woodlands of Eurasia that gives off an unpleasant odor when threatened	fissiped fur-bearing carnivorous mammals
American musteline mammal typically ejecting an intensely malodorous fluid when startled; in some classifications put in a separate subfamily Mephitinae