Your tool kit would be lost without a drill (especially a portable electric drill).
The most commonly used drill today is electric with a cable, although, it does look like the market share will soon be dominated with the cordless power drill, and interestingly, there are still many manual hand operated drills being used today which are mostly to simply just drill a small hole.
It would probably help you to consider not only the main use of drilling holes but the many other features that a power drill can be used for, and to learn some of the terminology that is used to describe the drill? such as the drill size, the bit shank and its size that the chuck can accommodate, especially as there are a lot of tools that can be attached, such as screw driving, grinding, driving the spindle of a lathe, sanding, etc.
Usually a drill with a large chuck would be to attach tools that require greater torque of rotating power to drill into very hard materials such as concrete or steel, in which case many such drills have variable speeds to help with the hardest of said drilling jobs and the softest of rotating such as screwing screws.
Many have clutches which help to prolong the life of the motor.
The size of the motor is determined by the size of the workload that it is going to be used for?
used as a hand tool by manually rotating the drill bit by cranking the handle whilst pressing hard on the brace, (commonly known as an ‘Eggbeater”)
Similar to the brace but shaped so that leaning pressure can be applied for the hardest of drilling jobs. Persian Drill, was formerly used for special intricate operations such as in dentistry or Jewellery which had a 'spiral ratchet’
Gimlet is a small hand held tool (like a screw driver) and turned (usually) in wood as a starter poinr such as pilot holes for bigger drills too drill into and in model making that require very small screws.
Was used centres ago to light fires by using the twine on a bow to rotate tinder wood until friction caught the tinder alight.
Hammer function its purpose is for drilling into concrete, steel plates, hard wood or any hard srface. Mains operated with a cable, or portable with a battery, many with set or variable speed, reversing, and is the most widely used power drill used today. it can have a hammer that provides a rapid hammering action whilst the drill is rotating, some can even have Percussion which in addition to the Hammering effect can have the rotation turned off and used only for Chiselling, etc, albeit, this type of electric drill is usually a larger type that usually builders use.
Electric Bench Drill
Used for accuracy in drilling, and normally have a clamp guide with levers to direct the drilling angle so as to provide precision drilling, usually used by engineering mechanics
Power drill Usually described as a driving tool, albeit, it has various other functions usually with attachments such as (but not limited too) drill bits for drilling holes, saws for cutting, operating lathes, etc.
The attachment's are held by a chuck at one end of the drill and rotated to do the chosen task.
Power Drills are mostly used by builders, either do-it-yourself or major construction work, with Wood, Metal, Concrete, Plastic, etc. in many cases speciality drills are designed and used by medical surgeons, dentists, and a wide variety of requirements.
We have chosen the two Power Drills above as a good choice after reviewing them for easily undertaking most of the jobs expected from a power drill and attracted by being cordless and the high star rating. Please look at the many choices by clicking the link hereunder:-