mistake vs trip up

mistake is a noun but trip up is not a noun.

Word	Noun	Adjective	Verb	Adverb
mistake	Yes	No	Yes	No
trip up	No	No	Yes	No

As verbs, trip up is a hyponym of mistake; that is, trip up is a word with a more specific, narrower meaning than mistake:

Other hyponyms of mistake include misremember, slip up, stumble, misjudge, fall for.

mistake (noun)	trip up (noun)
a wrong action attributable to bad judgment or ignorance or inattention
an understanding of something that is not correct
part of a statement that is not correct

mistake (verb)	trip up (verb)
to make a mistake or be incorrect	detect a blunder or misstep
identify incorrectly	make an error
	cause to stumble