grease vs grunge

grease and grunge both are nouns.

Word	Noun	Adjective	Verb	Adverb
grease	Yes	No	Yes	No
grunge	Yes	No	No	No

As nouns, grease and grunge are synonyms defined as:

Other synonyms of grease include dirt, filth, grime, soil, stain.

grease (noun)	grunge (noun)
anything regarded as making something unclean	anything regarded as making something unclean
a thick fatty oil (especially one used to lubricate machinery)

grease (verb)	grunge (verb)
lubricate with grease