pile-up

(v) collect or gather
- Journals are accumulating in my office
- The work keeps piling up
amass, conglomerate, cumulate, accumulate, gather,
(v) arrange into piles or stacks
- She piled up her books in my living room
heap up, stack up,
(v) get or gather together
- I am accumulating evidence for the man's unfaithfulness to his wife
- She is amassing a lot of data for her thesis
- She rolled up a small fortune
accumulate, collect, compile, amass, hoard, roll up,

amass conglomerate cumulate accumulate gather heap up stack up collect compile hoard roll up