ruler vs actor

ruler and actor both are nouns.

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

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

Other hypernyms of ruler include doer, worker.

ruler (noun)	actor (noun)
measuring stick consisting of a strip of wood or metal or plastic with a straight edge that is used for drawing straight lines and measuring lengths	a theatrical performer
a person who rules or commands	a person who acts and gets things done