complain vs beef

complain is not a noun while beef is a noun.

Word	Noun	Adjective	Verb	Adverb
complain	No	No	Yes	No
beef	Yes	No	Yes	No

As verbs, beef is a hyponym of complain; that is, beef is a word with a more specific, narrower meaning than complain:

complain (noun)	beef (noun)
	cattle that are reared for their meat
	informal terms for objecting
	meat from an adult domestic bovine

complain (verb)	beef (verb)
express complaints, discontent, displeasure, or unhappiness	complain
make a formal accusation; bring a formal charge