A container things are dropped into together. Bucketing groups by rough similarity rather than exact kind.

To place a thing under a named class. Categorising is a claim spoken over a thing, and it can be wrong about it.

To put into until nothing more fits, and the colour laid inside a shape. Both occupy an emptiness that was waiting.

How long a thing is kept before it is let go. A retention rule is an ethical decision wearing a technical name.