passenger train vs coach

passenger train and coach both are nouns.

Word	Noun	Adjective	Verb	Adverb
passenger train	Yes	No	No	No
coach	Yes	No	Yes	No

passenger train (noun)	coach (noun)
a train that carries passengers	a carriage pulled by four horses with one driver
	a railcar where passengers ride
	a vehicle carrying many passengers; used for public transport
	a person who gives private instruction (as in singing, acting, etc.)
	(sports) someone in charge of training an athlete or a team

passenger train (verb)	coach (verb)
	teach and supervise (someone); act as a trainer or coach (to), as in sports
	drive or operate a coach or carriage