sea power vs military posture

sea power and military posture both are nouns.

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

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

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

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

sea power (noun)	military posture (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