Which instruments is considered to be a bridge between the trombone amd the trumpet?

The instrument considered to be a bridge between the Trombone and the Trumpet is the euphonium. It shares the brass construction and valve system of the trumpet but features a larger, more conical shape similar to the trombone. This combination allows it to produce a rich, warm tone while also having the agility associated with brass instruments. Additionally, its versatility makes it suitable for various musical genres, from classical to Marching Bands.