accumulate

(verb) get or gather together. Synonyms: roll up, collect, pile up, amass, compile, hoard. Examples: "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."

(verb) collect or gather. Synonyms: cumulate, conglomerate, pile up, gather, amass. Examples: "Journals are accumulating in my office." "The work keeps piling up."