Knife
From Wikipedia, a free encyclopedia written in simple English for easy reading.
A knife is a tool used to cut all sorts of things.
There are many kinds of knifes depending what you are trying to cut. If you have the right knife, cutting can be done efficiently (well). If you have the wrong kind of knife, cutting will be less efficient.
When a knife is too small to cut something, a saw or an axe may be needed.