weasel vs worker

weasel and worker both are nouns.

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

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

Other hypernyms of weasel include actor, doer.

weasel (noun)	worker (noun)
small carnivorous mammal with short legs and elongated body and neck	sterile member of a colony of social insects that forages for food and cares for the larvae
a person who is regarded as treacherous or sneaky	a person who works at a specific occupation
	a member of the working class (not necessarily employed)
	a person who acts and gets things done