beef vs meat

beef and meat both are nouns.

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

As nouns, meat is a hypernym of beef; that is, meat is a word with a broader meaning than beef:

beef: meat from an adult domestic bovine
meat: the flesh of animals (including fishes and birds and snails) used as food

beef (noun)	meat (noun)
cattle that are reared for their meat	the choicest or most essential or most vital part of some idea or experience
informal terms for objecting	the flesh of animals (including fishes and birds and snails) used as food
meat from an adult domestic bovine	the inner and usually edible part of a seed or grain or nut or fruit stone

beef (verb)	meat (verb)
complain