grime vs blemish

grime and blemish both are nouns.

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

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

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

grime (noun)	blemish (noun)
anything regarded as making something unclean	a mark or flaw that spoils the appearance of something (especially on a person's body)

grime (verb)	blemish (verb)
make soiled, filthy, or dirty	add a flaw or blemish to; make imperfect or defective
	mar or impair with a flaw
	mar or spoil the appearance of