roadster vs equipage

roadster and equipage both are nouns.

Word	Noun	Adjective	Verb	Adverb
roadster	Yes	No	No	No
equipage	Yes	No	No	No

As nouns, equipage is a hypernym of roadster; that is, equipage is a word with a broader meaning than roadster:

Other hypernyms of roadster include carriage, rig.

roadster (noun)	equipage (noun)
a small lightweight carriage; drawn by a single horse	a vehicle with wheels drawn by one or more horses
an open automobile having a front seat and a rumble seat	equipment and supplies of a military force