fraternal vs brotherhood

fraternal is not a noun while brotherhood is a noun.

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

fraternal (noun)	brotherhood (noun)
	the feeling that men should treat one another like brothers
	people engaged in a particular occupation
	an organization of employees formed to bargain with the employer
	the kinship relation between a male offspring and the siblings

fraternal (adjective)	brotherhood (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