1) Accrue 2) Accumulate 3) Accumulate albums 4) Accumulate strategically 5) Acquire 6) Act like a pack rat 7) Agglomerate 8) Assemble 9) Bank 10) Be a hoarder 11) Bring together 12) Build a collection of 13) Build a hoard of 14) Build a pile of 15) Build a reserve of 16) Build over time 17) Build up 1) Accrue 2) Accumulate 3) Collect 4) Compile 5) Corral 6) Cumulate 7) Garner 8) Gather 9) Gather in 10) Hoard 11) Increase 12) Pick 13) Pileup 14) Rack up 15) Rollup 16) Runup 17) Save 18) Stockpile 19) Store up 
• (v. t.) To collect into a mass or heap; to gather a great quantity of; to accumulate; as, to amass a treasure or a fortune; to amass words or phrases. • (n.) A mass; a heap.
Archival Management and Storage System
A·mass' noun [ Old French amasse , from ambusher .] A mass; a heap. [ Obsolete] Sir H. Wotton. A·mass' transitive verb [ imperfect & past participle Amassed ; present participle & verbal noun Amassing .] [ French ambusher , Late Latin amassare; Latin ad + massa lump, mass. See Mass .] To collect into ...
Airport Movement Area Safety System
to gather for oneself; collect as one's own: to amass a huge amount of money. · to collect into a mass or pile; gather: He amassed his papers for his memoirs.
[Literary terms] collect or gather