sea power vs military strength

sea power and military strength both are nouns.

Word	Noun	Adjective	Verb	Adverb
sea power	Yes	No	No	No
military strength	Yes	No	No	No

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

sea power: naval strength
military strength: capability in terms of personnel and materiel that affect the capacity to fight a war

Other hypernyms of sea power include military capability, military posture, posture, strength.

sea power (noun)	military strength (noun)
naval strength	capability in terms of personnel and materiel that affect the capacity to fight a war
a nation that possesses formidable naval strength