jalopy vs motorcar

jalopy and motorcar both are nouns.

Word	Noun	Adjective	Verb	Adverb
jalopy	Yes	No	No	No
motorcar	Yes	No	No	No

As nouns, motorcar is a hypernym of jalopy; that is, motorcar is a word with a broader meaning than jalopy:

jalopy: a car that is old and unreliable
motorcar: a motor vehicle with four wheels; usually propelled by an internal combustion engine

Other hypernyms of jalopy include auto, automobile, car, machine, dysphemism.

jalopy (noun)	motorcar (noun)
a car that is old and unreliable	a motor vehicle with four wheels; usually propelled by an internal combustion engine