South vs AL

South and AL both are nouns.

Word	Noun	Adjective	Verb	Adverb
South	Yes	No	No	No
AL	Yes	No	No	No

As nouns, AL is a hyponym of South; that is, AL is a word with a more specific, narrower meaning than South:

South: the region of the United States lying to the south of the Mason-Dixon line
AL: a state in the southeastern United States on the Gulf of Mexico; one of the Confederate states during the American Civil War

Other hyponyms of South include Ala., Alabama, Camellia State, Heart of Dixie.

South (noun)	AL (noun)
the southern states that seceded from the United States in 1861	a state in the southeastern United States on the Gulf of Mexico; one of the Confederate states during the American Civil War
the region of the United States lying to the south of the Mason-Dixon line