amass

/əˈmæs/
/əˈmæs/

noun

  1. A large number of things collected or piled together.

  2. The act of amassing.

Synonyms: heap, mass, pile

verb

  1. To collect into a mass or heap.

  2. To gather a great quantity of; to accumulate.

    "to amass a treasure or a fortune"

Synonyms: heap up, mound, pile, pile up, stack up, accumulate, amound, collect, gather, hoard