Often used attributively in compounds like 高速度カメラ (high-speed camera) or to describe rapid movement or processing.
高速度で走る新幹線はとても快適だ。
The Shinkansen, which runs at high speed, is very comfortable.
この工場では高速度の生産ラインが導入されている。
A high-speed production line has been introduced in this factory.
The bullet train runs at high speed.
We filmed the insect's flight with a high-speed camera.