vegetable matter vs matter

vegetable matter and matter both are nouns.

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

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

vegetable matter: matter produced by plants or growing in the manner of a plant
matter: that which has mass and occupies space

vegetable matter (noun)	matter (noun)
matter produced by plants or growing in the manner of a plant	that which has mass and occupies space
	(used with negation) having consequence
	some situation or event that is thought about
	a vaguely specified concern
	a problem
	written works (especially in books or magazines)

vegetable matter (verb)	matter (verb)
	have weight; have import, carry weight