There's no single thing that's *exactly* equivalent to velocity. Velocity is a specific concept that combines both speed and direction. So, to get something equivalent, you need to account for both aspects:

1. Speed:

* Magnitude of velocity: This refers to the numerical value of velocity, which is the same as the object's speed.

* Rate of change of position: Velocity is the rate at which an object's position changes over time. You could say the "rate of displacement" is equivalent to speed, but velocity is a more complete description.

2. Direction:

* Bearing: A compass direction (e.g., North, South, East, West) describes the direction of motion.

* Angle: An angle relative to a reference point (like the horizontal or vertical axis) can also specify the direction.

In summary:

While no single term is a perfect synonym for velocity, you can use a combination of speed and direction descriptors to achieve an equivalent meaning.

Let me know if you have any other questions!