Cornets and trumpets both belong to the brass family of instruments. They look very similar, and both are used to play a wide range of musical styles. However, there are some key differences between the two. The most noticeable difference between a cornet and a trumpet is the shape. A cornet is more conical in shape and is typically shorter than a trumpet. The cornet also has a softer, more mellow sound than the trumpet. The trumpet has a brighter, more penetrating sound. Additionally, the valves on a cornet are usually larger and more widely spaced than those on a trumpet. This makes it easier for a beginner to learn to play the cornet. The trumpet requires a higher level of skill and technique to play.