state trooper vs officer

state trooper and officer both are nouns.

Word	Noun	Adjective	Verb	Adverb
state trooper	Yes	No	No	No
officer	Yes	No	Yes	No

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

Other hypernyms of state trooper include police officer.

state trooper (noun)	officer (noun)
a state police officer	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

state trooper (verb)	officer (verb)
	direct or command as an officer