runabout vs automobile

runabout and automobile both are nouns.

Word	Noun	Adjective	Verb	Adverb
runabout	Yes	No	No	No
automobile	Yes	No	Yes	No

As nouns, automobile is a hypernym of runabout; that is, automobile is a word with a broader meaning than runabout:

runabout: an open automobile having a front seat and a rumble seat
automobile: a motor vehicle with four wheels; usually propelled by an internal combustion engine

Other hypernyms of runabout include auto, car, machine, motorcar.

runabout (noun)	automobile (noun)
an open automobile having a front seat and a rumble seat	a motor vehicle with four wheels; usually propelled by an internal combustion engine

runabout (verb)	automobile (verb)
	travel in an automobile