Pile Up
WordNet
verb
(1) Collect or gather
"Journals are accumulating in my office"
"The work keeps piling up"
(2) Arrange into piles or stacks
"She piled up her books in my living room"
(3) 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"