coach vs wagon-lit

coach and wagon-lit both are nouns.

Word	Noun	Adjective	Verb	Adverb
coach	Yes	No	Yes	No
wagon-lit	Yes	No	No	No

As nouns, wagon-lit is a hyponym of coach; that is, wagon-lit is a word with a more specific, narrower meaning than coach:

coach (noun)	wagon-lit (noun)
a carriage pulled by four horses with one driver	a passenger car that has berths for sleeping
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

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