captain vs military machine

captain and military machine both are nouns.

Word	Noun	Adjective	Verb	Adverb
captain	Yes	No	Yes	No
military machine	Yes	No	No	No

captain (noun)	military machine (noun)
a dining-room attendant who is in charge of the waiters and the seating of customers	the military forces of a nation
the pilot in charge of an airship
the naval officer in command of a military ship
an officer who is licensed to command a merchant ship
a policeman in charge of a precinct
an officer holding a rank below a major but above a lieutenant
the leader of a group of people

captain (verb)	military machine (verb)
be the captain of a sports team