the.com/cooperage

means The craft (or workshop) of making and repairing barrels, casks, and other wooden vessels built from curved staves bound by hoops.

from Rooted in 'cooper,' the barrel-maker, likely borrowed from Middle Dutch 'kuper' (one who works with a 'kuip,' or cask/tub) — part of a wider Germanic family of words for tub and container. 'Cooperage' tacks on the '-age' suffix to name both the trade itself and the place where it's practiced, the way 'brewage' gestures at brewing. The word has stayed lashed to its origins as tightly as a stave to a hoop: wherever wine, whisky, or beer needs a wooden home, a cooperage is where it's built.