muddy vs soil

muddy is not a noun while soil is a noun.

Word	Noun	Adjective	Verb	Adverb
muddy	No	Yes	Yes	No
soil	Yes	No	Yes	No

As verbs, soil is a hypernym of muddy; that is, soil is a word with a broader meaning than muddy:

Other hypernyms of muddy include begrime, bemire, colly, dirty, grime.

muddy (noun)	soil (noun)
	the geographical area under the jurisdiction of a sovereign state
	material in the top layer of the surface of the earth in which plants can grow (especially with reference to its quality or use)
	anything regarded as making something unclean
	the part of the earth's surface consisting of humus and disintegrated rock

muddy (adjective)	soil (adjective)
dirty and messy; covered with mud or muck
(of color) discolored by impurities; not bright and clear
(of liquids) clouded as with sediment
(of soil) soft and watery