dieter vs actor

dieter and actor both are nouns.

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

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

Other hypernyms of dieter include doer, worker.

dieter (noun)	actor (noun)
a person who diets	a theatrical performer
	a person who acts and gets things done