birth vs actor

birth and actor both are nouns.

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

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

Other hypernyms of birth include doer, worker.

birth (noun)	actor (noun)
the event of being born	a theatrical performer
a baby born; an offspring	a person who acts and gets things done
the process of giving birth
the kinship relation of an offspring to the parents
the time when something begins (especially life)

birth (verb)	actor (verb)
cause to be born