hoarding

noun
1
a large board on the outside of a building or at the side of the road, used for displaying advertisements
تابلو تبلیغاتی, بیلبورد
2
a temporary fence made of boards that is placed around an area of land until a building has been built
حصار موقت
3
the act of collecting and keeping large amounts of food, money, etc., often secretly
احتکار, انبار کردن, جمع‌کردن
Consumer hoarding of limited goods, such as gasoline and paper, is creating shortages in stores.