sea power vs country

sea power and country both are nouns.

Word	Noun	Adjective	Verb	Adverb
sea power	Yes	No	No	No
country	Yes	No	No	No

As nouns, country is a hypernym of sea power; that is, country is a word with a broader meaning than sea power:

Other hypernyms of sea power include body politic, commonwealth, land, nation, res publica, state.

sea power (noun)	country (noun)
naval strength	a politically organized body of people under a single government
a nation that possesses formidable naval strength	the people who live in a nation or country
	the territory occupied by a nation
	an area outside of cities and towns
	a particular geographical region of indefinite boundary (usually serving some special purpose or distinguished by its people or culture or geography)