police detective vs officer

police detective and officer both are nouns.

Word	Noun	Adjective	Verb	Adverb
police detective	Yes	No	No	No
officer	Yes	No	Yes	No

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

Other hypernyms of police detective include police officer.

police detective (noun)	officer (noun)
a police officer who investigates crimes	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

police detective (verb)	officer (verb)
	direct or command as an officer