jalopy vs dysphemism

jalopy and dysphemism both are nouns.

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

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

jalopy: a car that is old and unreliable
dysphemism: an offensive or disparaging expression that is substituted for an inoffensive one

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

jalopy (noun)	dysphemism (noun)
a car that is old and unreliable	an offensive or disparaging expression that is substituted for an inoffensive one