cop vs officer

cop and officer both are nouns.

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

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

Other hypernyms of cop include police officer.

cop (noun)	officer (noun)
uncomplimentary terms for a policeman	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

cop (verb)	officer (verb)
take into custody	direct or command as an officer
take by theft