matter vs goop

matter and goop both are nouns.

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

As nouns, goop is a hyponym of matter; that is, goop is a word with a more specific, narrower meaning than matter:

matter (noun)	goop (noun)
that which has mass and occupies space	street names for gamma hydroxybutyrate
(used with negation) having consequence	any thick, viscous matter
some situation or event that is thought about
a vaguely specified concern
a problem
written works (especially in books or magazines)

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