White Friar vs friar

White Friar and friar both are nouns.

Word	Noun	Adjective	Verb	Adverb
White Friar	Yes	No	No	No
friar	Yes	No	No	No

As nouns, friar is a hypernym of White Friar; that is, friar is a word with a broader meaning than White Friar:

White Friar: a Roman Catholic friar wearing the white cloak of the Carmelite order; mendicant preachers
friar: a male member of a religious order that originally relied solely on alms

Other hypernyms of White Friar include mendicant.

White Friar (noun)	friar (noun)
a Roman Catholic friar wearing the white cloak of the Carmelite order; mendicant preachers	a male member of a religious order that originally relied solely on alms