repeater vs repeating firearm

repeater and repeating firearm both are nouns.

Word	Noun	Adjective	Verb	Adverb
repeater	Yes	No	No	No
repeating firearm	Yes	No	No	No

As nouns, repeater and repeating firearm are synonyms defined as:

repeater and repeating firearm: a firearm that can fire several rounds without reloading

repeater (noun)	repeating firearm (noun)
a firearm that can fire several rounds without reloading	a firearm that can fire several rounds without reloading
(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)