naval officer vs officer

naval officer and officer both are nouns.

Word	Noun	Adjective	Verb	Adverb
naval officer	Yes	No	No	No
officer	Yes	No	Yes	No

As nouns, officer is a hypernym of naval officer; that is, officer is a word with a broader meaning than naval officer:

naval officer: an officer in the navy
officer: any person in the armed services who holds a position of authority or command

Other hypernyms of naval officer include military officer.

naval officer (noun)	officer (noun)
an officer in the navy	a member of a police force
	someone who is appointed or elected to an office and who holds a position of trust
	any person in the armed services who holds a position of authority or command
	a person authorized to serve in a position of authority on a vessel

naval officer (verb)	officer (verb)
	direct or command as an officer