stigma vs bend sinister

stigma and bend sinister both are nouns.

Word	Noun	Adjective	Verb	Adverb
stigma	Yes	No	No	No
bend sinister	Yes	No	No	No

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

Other hyponyms of stigma include demerit, bar sinister, cloven foot, cloven hoof.

stigma (noun)	bend sinister (noun)
a skin lesion that is a diagnostic sign of some disease	a mark of bastardy; lines from top right to bottom left
an external tracheal aperture in a terrestrial arthropod
a symbol of disgrace or infamy
the apical end of the style where deposited pollen enters the pistil