hoarding
noun
uk/ˈhɔːdɪŋ/ us [ C ] MARKETING UK
a very large sign in a public place on which advertisements are shown:
advertising hoardings
A number of buildings have been demolished, with hoardings put up around the empty spaces.
Compare
billboard
[ U ] ECONOMICS, FINANCE
the act of collecting and storing a lot of money or objects, sometimes secretly:
In the uncertain economic climate, cash hoarding is understandable.
Compare
dishoarding