cloven hoof vs stigma

cloven hoof and stigma both are nouns.

Word	Noun	Adjective	Verb	Adverb
cloven hoof	Yes	No	No	No
stigma	Yes	No	No	No

As nouns, stigma is a hypernym of cloven hoof; that is, stigma is a word with a broader meaning than cloven hoof:

Other hypernyms of cloven hoof include brand, mark, stain.

cloven hoof (noun)	stigma (noun)
a hoof divided into two parts at its distal extremity (as of ruminants or swine)	a skin lesion that is a diagnostic sign of some disease
the mark of Satan	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