rider vs passenger vehicle

rider and passenger vehicle both are nouns.

Word	Noun	Adjective	Verb	Adverb
rider	Yes	No	No	No
passenger vehicle	Yes	No	No	No

rider (noun)	passenger vehicle (noun)
a clause that is appended to a legislative bill	a vehicle carrying many passengers; used for public transport
a traveler who actively rides an animal (as a horse or camel)
a traveler riding in a vehicle (a boat or bus or car or plane or train etc) who is not operating it
a traveler who actively rides a vehicle (as a bicycle or motorcycle)