With Electricity
It is how they are powered. Electric tools are powered by electricity and pneumatic tools are powered by forced air.
A battery
Tools are things that can use with hands... equipment can use because it uses electricity..
Tools are insulated mainly to prevent harm through conduction of electricity.
Hand tools are "handheld" tools (wrenchs, screwdrivers, pliers, ect.). Power Tools are tools that use electricity to power them(cordless tools). If you visit www.discounttoolmart.com you can see some examples.
screw drivers,drilling equipment,sawing and cutting tools,soldering equipment
operated by air (from a compressor) rather than operated by battery or electricity
They are hand held tools powered by electricity or batteries.
In a compressed air tool the driving force is air pressure. While in battery tools the electricity from the battery is converted to electromagnetic force to drive it.
They are tools that require electricity. This may come from using an extension cord to plug the tool into the wall or the tool may use a battery pack.
To make the tool more versatile. You can go places there is no electricity.