fraternity vs fraternal

fraternity is a noun but fraternal is not a noun.

Word	Noun	Adjective	Verb	Adverb
fraternity	Yes	No	No	No
fraternal	No	Yes	No	No

fraternity (noun)	fraternal (noun)
people engaged in a particular occupation
a social club for male undergraduates

fraternity (adjective)	fraternal (adjective)
	(of twins) derived from two separate fertilized ova
	like or characteristic of or befitting a brother
	of or relating to a fraternity or society of usually men