testate vs worker

testate and worker both are nouns.

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

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

Other hypernyms of testate include actor, doer.

testate (noun)	worker (noun)
a person who makes a will	sterile member of a colony of social insects that forages for food and cares for the larvae
	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

testate (adjective)	worker (adjective)
having made a legally valid will before death