Mustela frenata vs weasel

Mustela frenata and weasel both are nouns.

Word	Noun	Adjective	Verb	Adverb
Mustela frenata	Yes	No	No	No
weasel	Yes	No	No	No

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

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

Mustela frenata (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