trip-up vs pratfall

trip-up and pratfall both are nouns.

Word	Noun	Adjective	Verb	Adverb
trip-up	Yes	No	No	No
pratfall	Yes	No	No	No

As nouns, pratfall is a hypernym of trip-up; that is, pratfall is a word with a broader meaning than trip-up:

Other hypernyms of trip-up include bloomer, blooper, blunder, boner, boo-boo, botch, bungle, flub, foul-up, fuckup.

trip-up (noun)	pratfall (noun)
an unintentional but embarrassing blunder	an embarrassing mistake
	a fall onto your buttocks