applier vs actor

applier and actor both are nouns.

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

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

applier: a person who requests or seeks something such as assistance or employment or admission
actor: a person who acts and gets things done

Other hypernyms of applier include doer, worker.

applier (noun)	actor (noun)
a device for applying a substance	a theatrical performer
a person who requests or seeks something such as assistance or employment or admission	a person who acts and gets things done