They can be called a range or a block.
The group of cell to farm a rectangular in ms excel is called list
the active cell
In Excel 2003, it was called splitting. To bring them back together it is called merging.
editing
relative cell address
They are called CELLS .
Alignment.
A cell range
Fill Color
It could be called the current cell.
a cell
The intersection of a column and row in excel called "cell"