hoarding

(noun) large outdoor signboard. Synonyms: billboard.

(verb) save up as for future use. Synonyms: hoard, stash, cache, lay away, hive up, squirrel away.

(verb) get or gather together. Synonyms: roll up, collect, accumulate, 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."