amass

verb (used with object)

1. to gather for oneself; collect as one’s own: to amass a huge amount of money.
2. to collect into a mass or pile; gather: He amassed his papers for his memoirs.

verb (used without object)

3. to come together; assemble: crowds amassing for the parade.

verb

1. (tr) to accumulate or collect (esp riches, etc)
2. to gather in a heap; bring together