cabriolet vs cab

cabriolet and cab both are nouns.

Word	Noun	Adjective	Verb	Adverb
cabriolet	Yes	No	No	No
cab	Yes	No	Yes	No

As nouns, cabriolet and cab are synonyms defined as:

cabriolet and cab: small two-wheeled horse-drawn carriage; with two seats and a folding hood

cabriolet (noun)	cab (noun)
small two-wheeled horse-drawn carriage; with two seats and a folding hood	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

cabriolet (verb)	cab (verb)
	ride in a taxicab