long-tailed weasel vs weasel

long-tailed weasel and weasel both are nouns.

Word	Noun	Adjective	Verb	Adverb
long-tailed weasel	Yes	No	No	No
weasel	Yes	No	No	No

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

long-tailed weasel: the common American weasel distinguished by large size and black-tipped tail
weasel: small carnivorous mammal with short legs and elongated body and neck

long-tailed weasel (noun)	weasel (noun)
the common American weasel distinguished by large size and black-tipped tail	small carnivorous mammal with short legs and elongated body and neck
	a person who is regarded as treacherous or sneaky