Confederate States vs Dixieland

Confederate States and Dixieland both are nouns.

Word	Noun	Adjective	Verb	Adverb
Confederate States	Yes	No	No	No
Dixieland	Yes	No	No	No

As nouns, Confederate States and Dixieland are synonyms defined as:

Confederate States and Dixieland: the southern states that seceded from the United States in 1861

Other synonyms of Confederate States include Confederacy, Confederate States of America, Dixie, South.

Confederate States (noun)	Dixieland (noun)
the southern states that seceded from the United States in 1861	the southern states that seceded from the United States in 1861