coach vs minibus

coach and minibus both are nouns.

Word	Noun	Adjective	Verb	Adverb
coach	Yes	No	Yes	No
minibus	Yes	No	No	No

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

Other hyponyms of coach include school bus, trackless trolley, trolley coach, trolleybus.

coach (noun)	minibus (noun)
a carriage pulled by four horses with one driver	a light bus (4 to 10 passengers)
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)	minibus (verb)
teach and supervise (someone); act as a trainer or coach (to), as in sports
drive or operate a coach or carriage