policewoman vs officer

policewoman and officer both are nouns.

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

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

Other hypernyms of policewoman include police officer, adult female, woman.

policewoman (noun)	officer (noun)
a woman 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

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