"hoarding" in the noun sense
1. billboard, hoarding
large outdoor signboard
"hoarding" in the verb sense
1. hoard, stash, cache, lay away, hive up, squirrel away
save up as for future use
2. roll up, collect, accumulate, pile up, amass, compile, hoard
get or gather together
"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"
Source: WordNet® (An amazing lexical database of English)
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