commandant vs officer

commandant and officer both are nouns.

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

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

commandant: an officer in command of a military unit
officer: any person in the armed services who holds a position of authority or command

Other hypernyms of commandant include military officer.

commandant (noun)	officer (noun)
an officer in command of a military unit	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

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