Grey Friar vs Franciscan

Grey Friar and Franciscan both are nouns.

Word	Noun	Adjective	Verb	Adverb
Grey Friar	Yes	No	No	No
Franciscan	Yes	Yes	No	No

As nouns, Grey Friar and Franciscan are synonyms defined as:

Grey Friar and Franciscan: a Roman Catholic friar wearing the grey habit of the Franciscan order

Grey Friar (noun)	Franciscan (noun)
a Roman Catholic friar wearing the grey habit of the Franciscan order	a Roman Catholic friar wearing the grey habit of the Franciscan order

Grey Friar (adjective)	Franciscan (adjective)
	of or relating to Saint Francis of Assisi or to the order founded by him