pile up vs put in

pile up and put in both are verbs.

Word	Noun	Adjective	Verb	Adverb
pile up	No	No	Yes	No
put in	No	No	Yes	No

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

Other hypernyms of pile up include hive away, lay in, salt away, stack away, stash away, store.

pile up (verb)	put in (verb)
increase in amount by collecting or gathering	place, fit, or thrust (something) into another thing
arrange into piles or stacks	break into a conversation
get or gather together	to insert between other elements
	make an application as for a job or funding
	set up for use
	keep or lay aside for future use