stain vs ebonise

stain is a noun but ebonise is not a noun.

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

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

Other hyponyms of stain include ebonize, dip, tattoo, marble, vein.

stain (noun)	ebonise (noun)
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

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