Blackfriar vs mendicant

Blackfriar and mendicant both are nouns.

Word	Noun	Adjective	Verb	Adverb
Blackfriar	Yes	No	No	No
mendicant	Yes	Yes	No	No

As nouns, mendicant is a hypernym of Blackfriar; that is, mendicant is a word with a broader meaning than Blackfriar:

Blackfriar: a Roman Catholic friar wearing the black mantle of the Dominican order
mendicant: a male member of a religious order that originally relied solely on alms

Other hypernyms of Blackfriar include friar.

Blackfriar (noun)	mendicant (noun)
a Roman Catholic friar wearing the black mantle of the Dominican order	a pauper who lives by begging
	a male member of a religious order that originally relied solely on alms

Blackfriar (adjective)	mendicant (adjective)
	practicing beggary