grime vs foul

grime and foul both are nouns.

Word	Noun	Adjective	Verb	Adverb
grime	Yes	No	Yes	No
foul	Yes	Yes	Yes	No

As verbs, foul is a hyponym of grime; that is, foul is a word with a more specific, narrower meaning than grime:

Other hyponyms of grime include contaminate, pollute, smear, slime, muddy, muddy up, splash, mire, muck, muck up, mud, crock, blemish, spot.

grime (noun)	foul (noun)
anything regarded as making something unclean	an act that violates the rules of a sport

grime (adjective)	foul (adjective)
	(of a baseball) not hit between the foul lines
	disgustingly dirty; filled or smeared with offensive matter
	characterized by obscenity
	(of a manuscript) defaced with changes
	offensively malodorous
	highly offensive; arousing aversion or disgust
	especially of a ship's lines etc
	violating accepted standards or rules

grime (verb)	foul (verb)
make soiled, filthy, or dirty	become soiled and dirty
	make unclean
	spot, stain, or pollute
	make impure
	commit a foul; break the rules
	hit a foul ball
	become or cause to become obstructed