A dent is a hollow, like a shallow hole in a surface. Dents are usually caused by hitting something. The car in the picture has a dent in its side.
A dentist is someone who looks after other people's teeth. They clean your teeth properly, and fix up holes in people's teeth. They can also make your teeth look better by straightening or whitening them. Sometimes going to see the dentist can be painful or scarey, so if you don't want a dentist trip to be bad, you should look after your teeth and brush them every day.
A desk is a kind of table that is used for working on. A desk normally has drawers to keep things like pens and pencils in. Most desks are made out of wood or metal. Desks are almost always rectangular in shape.
You destroy something when you damage it so badly it is completely useless. You can destroy something by smashing it into tiny pieces, burning it or by dissolving it.
Dis forDestruction
Destruction is the act of destroying or demolishing something. It might also be used to describe the remains left once something has been destroyed.