marshy vs mucky

marshy and mucky both are adjectives.

Word	Noun	Adjective	Verb	Adverb
marshy	No	Yes	No	No
mucky	No	Yes	No	No

As adjectives, marshy and mucky are synonyms defined as:

Other synonyms of marshy include boggy, miry, muddy, quaggy, sloppy, sloughy, soggy, squashy, swampy, waterlogged.

marshy (adjective)	mucky (adjective)
(of soil) soft and watery	dirty and messy; covered with mud or muck
	(of soil) soft and watery