grime vs stain

grime and stain both are nouns.

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

As nouns, grime and stain are synonyms defined as:

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

grime (noun)	stain (noun)
anything regarded as making something unclean	an act that brings discredit to the person who does it
	a soiled or discolored appearance
	a symbol of disgrace or infamy
	anything regarded as making something unclean
	(microscopy) a dye or other coloring material that is used in microscopy to make structures visible

grime (verb)	stain (verb)
make soiled, filthy, or dirty	produce or leave stains
	color with a liquid dye or tint
	color for microscopic study
	make dirty or spotty, as by exposure to air; also used metaphorically