grime vs alter

grime is a noun but alter is not a noun.

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

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

Other hypernyms of grime include change, modify.

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

grime (verb)	alter (verb)
make soiled, filthy, or dirty	remove the ovaries of
	become different in some particular way, without permanently losing one's or its former characteristics or essence
	cause to change; make different; cause a transformation
	insert words into texts, often falsifying it thereby
	make an alteration to