repeater vs repeat

repeater and repeat both are nouns.

Word	Noun	Adjective	Verb	Adverb
repeater	Yes	No	No	No
repeat	Yes	No	Yes	No

repeater (noun)	repeat (noun)
a firearm that can fire several rounds without reloading	an event that repeats
(electronics) electronic device that amplifies a signal before transmitting it again
a person who repeats
someone who is repeatedly arrested for criminal behavior (especially for the same criminal behavior)

repeater (verb)	repeat (verb)
	happen or occur again
	to say, state, or perform again
	to say again or imitate
	make or do or perform again
	repeat an earlier theme of a composition
	do over