peat vs vegetable matter

peat and vegetable matter both are nouns.

Word	Noun	Adjective	Verb	Adverb
peat	Yes	No	No	No
vegetable matter	Yes	No	No	No

As nouns, vegetable matter is a hypernym of peat; that is, vegetable matter is a word with a broader meaning than peat:

peat: partially carbonized vegetable matter saturated with water; can be used as a fuel when dried
vegetable matter: matter produced by plants or growing in the manner of a plant

Other hypernyms of peat include humate.

peat (noun)	vegetable matter (noun)
partially carbonized vegetable matter saturated with water; can be used as a fuel when dried	matter produced by plants or growing in the manner of a plant