The “Erase” border lets you do the same thing, but for completely removing all borders.
The options there let you click and drag to apply the selected border style, which can be handy if you’re trying to quickly put said borders on lots of different cells in your spreadsheet. Toward the bottom of that menu, you’ll also see a “Draw Borders” section. For example, a row of title text might benefit from a thick bottom border with empty borders on the top and sides.
The options in the “Borders” section of that menu cover most of the types of cell borders you’ll want to use. You’ll see more than a dozen common options for borders.
