Philippines vs archipelago

Philippines and archipelago both are nouns.

Word	Noun	Adjective	Verb	Adverb
Philippines	Yes	No	No	No
archipelago	Yes	No	No	No

Philippines (noun)	archipelago (noun)
a republic on the Philippine Islands; achieved independence from the United States in 1946	a group of many islands in a large body of water
an archipelago in the southwestern Pacific including some 7000 islands