kook vs actor

kook and actor both are nouns.

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

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

Other hypernyms of kook include doer, worker.

kook (noun)	actor (noun)
someone regarded as eccentric or crazy and standing out from a group	a theatrical performer
	a person who acts and gets things done