fastener vs actor

fastener and actor both are nouns.

Word	Noun	Adjective	Verb	Adverb
fastener	Yes	No	No	No
actor	Yes	No	No	No

As nouns, actor is a hypernym of fastener; that is, actor is a word with a broader meaning than fastener:

Other hypernyms of fastener include doer, worker.

fastener (noun)	actor (noun)
restraint that attaches to something or holds something in place	a theatrical performer
a person who fastens or makes fast	a person who acts and gets things done