If you are using proper authorised outlet boxes, they come with all the holes pre-cut. Holes to mount wire clamps and holes for mounting screws. If you don't use these you are not 'to code'
Black and Decker make several drills that can be used both with and without a cord.
The rotating action of the drill bit makes the hole.
"Drills" is the plural of "drill". A drill can be a tool used to make a hole. A drill can be a military procedure.
Drill?
To make a hole in or through, with or as if with a drill.
I would use a "hole saw".
Drill bits are not universal. You choose the size of the drill bit according to the size of hole you like to make.
the specification of a drill machine is the diameter of the hole it can make.
To make drilling a HOLE (hehe) lot easier
A drill guide is used to make an accurate hole when not using an drill press. When one needs to use a handheld drill on a project, the drill guide will keep the drill bit straight and accurate.
more force drilling machine a drill with the 'hammer' facility and a good condition TCT drill bit. But, you do not necessarily need speed, you need acuracy
use a punch press or drill it