crony vs brother

crony and brother both are nouns.

Word	Noun	Adjective	Verb	Adverb
crony	Yes	No	No	No
brother	Yes	No	No	No

As nouns, crony and brother are synonyms defined as:

crony and brother: a close friend who accompanies his buddies in their activities

Other synonyms of crony include buddy, chum, pal, sidekick.

crony (noun)	brother (noun)
a close friend who accompanies his buddies in their activities	a male with the same parents as someone else
	a male person who is a fellow member (of a fraternity or religion or other group)
	a close friend who accompanies his buddies in their activities
	used as a term of address for those male persons engaged in the same movement