changer vs actor

changer and actor both are nouns.

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

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

Other hypernyms of changer include doer, worker.

changer (noun)	actor (noun)
an automatic mechanical device on a record player that causes new records to be played without manual intervention	a theatrical performer
a person who changes something	a person who acts and gets things done