mutton vs meat

mutton and meat both are nouns.

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

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

mutton: meat from a mature domestic sheep
meat: the flesh of animals (including fishes and birds and snails) used as food

mutton (noun)	meat (noun)
meat from a mature domestic sheep	the choicest or most essential or most vital part of some idea or experience
	the flesh of animals (including fishes and birds and snails) used as food
	the inner and usually edible part of a seed or grain or nut or fruit stone