grime vs modify

grime is a noun but modify is not a noun.

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

As verbs, modify is a hypernym of grime; that is, modify is a word with a broader meaning than grime:

Other hypernyms of grime include alter, change.

grime (noun)	modify (noun)
anything regarded as making something unclean

grime (verb)	modify (verb)
make soiled, filthy, or dirty	make less severe or harsh or extreme
	add a modifier to a constituent
	cause to change; make different; cause a transformation