experimenter vs actor

experimenter and actor both are nouns.

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

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

Other hypernyms of experimenter include doer, worker.

experimenter (noun)	actor (noun)
a research worker who conducts experiments	a theatrical performer
a person who enjoys testing innovative ideas	a person who acts and gets things done