Carolina parakeet vs paraquet

Carolina parakeet and paraquet both are nouns.

Word	Noun	Adjective	Verb	Adverb
Carolina parakeet	Yes	No	No	No
paraquet	Yes	No	No	No

As nouns, paraquet is a hypernym of Carolina parakeet; that is, paraquet is a word with a broader meaning than Carolina parakeet:

Carolina parakeet: extinct parakeet whose range extended far into the United States
paraquet: any of numerous small slender long-tailed parrots

Other hypernyms of Carolina parakeet include parakeet, paroquet, parrakeet, parroket, parroquet.

Carolina parakeet (noun)	paraquet (noun)
extinct parakeet whose range extended far into the United States	any of numerous small slender long-tailed parrots