police force vs officer

police force and officer both are nouns.

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

police force (noun)	officer (noun)
the force of policemen and officers	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 force (verb)	officer (verb)
	direct or command as an officer