Groups of things in English

Stack (груда, куча): a stack of chairs, a stack of books, a stack of work, a stack of plates
Set (комплект): a set of tools, a set of underwear, a set of compasses, a set of cutlery
Pile / Heap (куча): a pile of clothes, a heap of bodies.
Bunch (букет, гроздь): a bunch of flowers, a bunch of grapes, a bunch of bananas.
Bundle (пакет, связка, пучок): a bundle of newspapers, a bundle of sticks, a bundle of nothing.
Batch (пачка, партия, куча): a batch of homebrew, a batch of letters, a batch of recruits.
Stash (тайник): a stash of cash, a stash of beer, a stash of weapons. (usually the things are hidden)
Fleet (флот): a fleet of ships
Bunch-Of-Flowers (350x350, 29Kb)