Power drivers and drills, as we can see, bear similar looks (pistol-shaped) and even function similarly to some extent. It seems impossible to tell them apart from one another. They take slightly different forms (mainly the chuck) and occur in their niche more often than others. The next chapters may give you some hints on how to make a choice.
Cordless screwdrivers are usually light-weighted and very easy to use. That means they’re ideal for smaller projects around the house, such as assembling a bookshelf, removing a cabinet door, and replacing an outlet cover.
Power drills are indispensable tools for home improvement and all types of jobs around the house, small or large. You can equip them with needle-thin bits for drilling tiny holes for craft projects or chuck in large hole saws for cutting up to 5-inch diameter holes in drywall and other soft materials.
Cordless Impact Drivers
Impact drivers excel at driving fasteners into dense or knotty wood. Use Impact Drivers When：
Driving screws into wood or metal (you can use it for drywall if you’ve got a lower speed/torque option)
Driving large diameter screws or lag bolts.
Tightening/loosening bolts, including those that should be very tight or have been stuck.
Unlike drills, impact drivers have quick-release shanks that accept all 1/4 inch hex driver bits.
Cordless Hammer Drill
A hammer drill combines rotational bursts with front-to-back movement (the hammering action) to bore into difficult masonry that presents an obstacle for ordinary drills.
Cordless Impact Wrench
Impact wrenches are found in the tool chests of mechanics everywhere. They’re commonly used for loosening lug nuts from cars and trucks, but they can also be used in any high-torque situation.
How To Decide
If you need to drill holes and drive the occasional medium-sized screw, a regular drill will suit you fine. If you’ve got a deck to build, a plywood sub-floor to install, a treehouse to screw together, or any other job involving lots of wood screws, consider investing in an impact driver.