Saipan vs amphibious assault

Saipan and amphibious assault both are nouns.

Word	Noun	Adjective	Verb	Adverb
Saipan	Yes	No	No	No
amphibious assault	Yes	No	No	No

Saipan (noun)	amphibious assault (noun)
US forces captured the island from the Japanese in July 1944; it was an important air base until the end of World War II	an amphibious operation attacking a land base that is carried out by troops that are landed by naval ships
the largest island in the Northern Marianas and the administrative center of the commonwealth of the Northern Mariana Islands in union with the United States