motor vehicle vs cab

motor vehicle and cab both are nouns.

Word	Noun	Adjective	Verb	Adverb
motor vehicle	Yes	No	No	No
cab	Yes	No	Yes	No

motor vehicle (noun)	cab (noun)
a self-propelled wheeled vehicle that does not run on rails	a car driven by a person whose job is to take passengers where they want to go in exchange for money
	small two-wheeled horse-drawn carriage; with two seats and a folding hood
	a compartment at the front of a motor vehicle or locomotive where driver sits

motor vehicle (verb)	cab (verb)
	ride in a taxicab