limousine vs motorcar

limousine and motorcar both are nouns.

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

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

limousine: large luxurious car; usually driven by a chauffeur
motorcar: a motor vehicle with four wheels; usually propelled by an internal combustion engine

Other hypernyms of limousine include auto, automobile, car, machine.

limousine (noun)	motorcar (noun)
large luxurious car; usually driven by a chauffeur	a motor vehicle with four wheels; usually propelled by an internal combustion engine