They can be called the destination cells, destination area, paste area, or target.
range
They are called a range or sometimes a block.
It is normally called the destination.
Destination Area.paste area
They can be called a Range or a Block. This is only if it is a single selection of a rectangular block of cells. It is possible to select cells that are not together, known as being non-contiguous, but this is not a range or block.
A group of cells is called a range.
column
range
The Criteria Range is a range of cells that hold cells from which criteria are tested for functions in Excel.
Hi
An adjacent group of cells are known as a range or a block. There is no particular name for a group of non-adjacent cells.
A Range