electrical engineering vs repeater

electrical engineering and repeater both are nouns.

Word	Noun	Adjective	Verb	Adverb
electrical engineering	Yes	No	No	No
repeater	Yes	No	No	No

electrical engineering (noun)	repeater (noun)
the branch of engineering science that studies the uses of electricity and the equipment for power generation and distribution and the control of machines and communication	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)