Reb vs Johnny

Reb and Johnny both are nouns.

Word	Noun	Adjective	Verb	Adverb
Reb	Yes	No	No	No
Johnny	Yes	No	No	No

As nouns, Reb and Johnny are synonyms defined as:

Reb and Johnny: `Johnny' was applied as a nickname for Confederate soldiers by the Federal soldiers in the American Civil War; `greyback' derived from their grey Confederate uniforms

Other synonyms of Reb include greyback, Johnny Reb, Rebel.

Reb (noun)	Johnny (noun)
`Johnny' was applied as a nickname for Confederate soldiers by the Federal soldiers in the American Civil War; `greyback' derived from their grey Confederate uniforms	`Johnny' was applied as a nickname for Confederate soldiers by the Federal soldiers in the American Civil War; `greyback' derived from their grey Confederate uniforms