repeater vs worker

repeater and worker both are nouns.

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

As nouns, worker is a hypernym of repeater; that is, worker is a word with a broader meaning than repeater:

Other hypernyms of repeater include actor, doer.

repeater (noun)	worker (noun)
a firearm that can fire several rounds without reloading	sterile member of a colony of social insects that forages for food and cares for the larvae
(electronics) electronic device that amplifies a signal before transmitting it again	a person who works at a specific occupation
a person who repeats	a member of the working class (not necessarily employed)
someone who is repeatedly arrested for criminal behavior (especially for the same criminal behavior)	a person who acts and gets things done