What is the primary difference between a hypervelocity star and a runaway star?

Hypervelocity stars are ejected by black holes while runaway stars are ejected by supernovae

Classification of these wandering stars often depends on their origin and speed. Hypervelocity stars are typically those ejected by the intense gravitational interactions of supermassive black holes, resulting in extreme speeds that can reach thousands of kilometers per second. Runaway stars, conversely, are typically ejected during supernova events. While they also travel at high speeds, they are generally less energetic than hypervelocity stars and often remain within or near the halo of the galaxy rather than achieving the higher escape velocities seen in black hole ejections.