compile vs pile up

compile and pile up both are verbs.

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

As verbs, compile and pile up are synonyms defined as:

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

compile (verb)	pile up (verb)
put together out of existing material	increase in amount by collecting or gathering
use a computer program to translate source code written in a particular programming language into computer-readable machine code that can be executed	arrange into piles or stacks
get or gather together	get or gather together