stain vs bar sinister

stain and bar sinister both are nouns.

Word	Noun	Adjective	Verb	Adverb
stain	Yes	No	Yes	No
bar sinister	Yes	No	No	No

As nouns, bar sinister is a hyponym of stain; that is, bar sinister is a word with a more specific, narrower meaning than stain:

Other hyponyms of stain include demerit, bend sinister, cloven foot, cloven hoof.

stain (noun)	bar sinister (noun)
an act that brings discredit to the person who does it	a mark of bastardy; lines from top right to bottom left
a soiled or discolored appearance	the status of being born to parents who were not married
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)	bar sinister (verb)
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