excrement vs muck

excrement and muck both are nouns.

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

excrement (noun)	muck (noun)
waste matter (as urine or sweat but especially feces) discharged from the body	any thick, viscous matter
	fecal matter of animals

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