weasel vs musteline

weasel and musteline both are nouns.

Word	Noun	Adjective	Verb	Adverb
weasel	Yes	No	No	No
musteline	Yes	No	No	No

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

weasel: small carnivorous mammal with short legs and elongated body and neck
musteline: fissiped fur-bearing carnivorous mammals

Other hypernyms of weasel include mustelid, musteline mammal.

weasel (noun)	musteline (noun)
small carnivorous mammal with short legs and elongated body and neck	fissiped fur-bearing carnivorous mammals
a person who is regarded as treacherous or sneaky