H.I. vs Hawaiian Islands

H.I. and Hawaiian Islands both are nouns.

Word	Noun	Adjective	Verb	Adverb
H.I.	Yes	No	No	No
Hawaiian Islands	Yes	No	No	No

As nouns, H.I. and Hawaiian Islands are synonyms defined as:

H.I. and Hawaiian Islands: a group of volcanic and coral islands in the central Pacific

Other synonyms of H.I. include Sandwich Islands.

H.I. (noun)	Hawaiian Islands (noun)
a group of volcanic and coral islands in the central Pacific	a group of volcanic and coral islands in the central Pacific