omnibus vs jitney

omnibus and jitney both are nouns.

Word	Noun	Adjective	Verb	Adverb
omnibus	Yes	Yes	No	No
jitney	Yes	No	No	No

As nouns, omnibus and jitney are synonyms defined as:

omnibus and jitney: a vehicle carrying many passengers; used for public transport

Other synonyms of omnibus include autobus, bus, charabanc, coach, double-decker, motorbus, motorcoach, passenger vehicle.

omnibus (noun)	jitney (noun)
a vehicle carrying many passengers; used for public transport	a vehicle carrying many passengers; used for public transport
an anthology of articles on a related subject or an anthology of the works of a single author

omnibus (adjective)	jitney (adjective)
providing for many things at once