dye vs stain

dye and stain both are nouns.

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

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

Other hyponyms of dye include bronze, dye, deep-dye, impress, yarn-dye, fast dye, double dye, hand-dye, piece-dye.

As verbs, dye and stain are synonyms defined as:

dye (noun)	stain (noun)
a usually soluble substance for staining or coloring e.g. fabrics or hair	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

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