Hi Karen, By 'here' I assume you mean the US.
The answer to the 2nd question is relatively easy; NO.
The answer to your 1st question is: 'It depends'. It depends on what
the tool is & how it's made.
The UK & most of the rest of the European continent use 50 cycle 220
volt current. The US uses 60 cycle 110 volt current.
Probably the best thing to is to take the tool to a competent local
electrician or shop that services power tools & have them take a
look at it. They should be able to answer your question. There's one
thing that can be said, if it's a motor driven tool, the speed rate
listed on the motor will be incorrect when it's run on 60 cycle
current. The motor will run faster than the listed speed.