scrape up vs pile up

scrape up and pile up both are verbs.

Word	Noun	Adjective	Verb	Adverb
scrape up	No	No	Yes	No
pile up	No	No	Yes	No

As verbs, pile up is a hypernym of scrape up; that is, pile up is a word with a broader meaning than scrape up:

Other hypernyms of scrape up include accumulate, amass, collect, compile, hoard, roll up.

scrape up (verb)	pile up (verb)
gather (money or other resources) together over time	increase in amount by collecting or gathering
	arrange into piles or stacks
	get or gather together