muck vs goop

muck and goop both are nouns.

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

As nouns, muck and goop are synonyms defined as:

Other synonyms of muck include goo, gook, guck, gunk, ooze, slime, sludge.

muck (noun)	goop (noun)
any thick, viscous matter	street names for gamma hydroxybutyrate
fecal matter of animals	any thick, viscous matter

muck (verb)	goop (verb)
remove muck, clear away muck, as in a mine
soil with mud, muck, or mire
spread manure, as for fertilization