fight vs naval battle

fight and naval battle both are nouns.

Word	Noun	Adjective	Verb	Adverb
fight	Yes	No	Yes	No
naval battle	Yes	No	No	No

As nouns, naval battle is a hyponym of fight; that is, naval battle is a word with a more specific, narrower meaning than fight:

Other hyponyms of fight include Armageddon, pitched battle, armed combat, combat, dogfight, assault.

fight (noun)	naval battle (noun)
a hostile meeting of opposing military forces in the course of a war	a pitched battle between naval fleets
the act of fighting; any contest or struggle
a boxing or wrestling match
an aggressive willingness to compete
an intense verbal dispute

fight (verb)	naval battle (verb)
be engaged in a fight; carry on a fight
fight against or resist strongly
make a strenuous or labored effort
exert oneself continuously, vigorously, or obtrusively to gain an end or engage in a crusade for a certain cause or person; be an advocate for