Here's a breakdown:

* Speed: The rate at which an object changes position over time. It's measured in units like meters per second (m/s) or kilometers per hour (km/h).

* Constant: Meaning unchanging.

* Velocity: Speed with a direction.

Therefore, constant speed means an object is covering the same distance in the same amount of time throughout its motion.

Example: A car traveling at a steady 60 km/h on a straight highway has constant speed.

Important Note: Constant speed does not necessarily mean constant velocity. An object can be moving at a constant speed in a circle, which means its direction is changing, resulting in a change in velocity.