Uniform velocity : is said to have uniform velocity when it is travelling in a fixed direction and by keeping the speed constant.
Uniform accelaration : body has uniform acceleration if it travels in a straight line and its velocity increases by equal amount in equal interval of time.

Uniform Velocity:
Uniform velocity refers to the motion of an object with a constant speed and direction. This means that the object travels the same distance in equal time intervals and maintains a constant direction. An example of uniform velocity is a car moving in a straight line at a constant speed.

Uniform Acceleration:
Uniform acceleration refers to the motion of an object that experiences a constant change in velocity over time. This means that the object's speed increases or decreases at a constant rate, and the direction of its motion may also change. An example of uniform acceleration is a ball rolling down a ramp, where the force of gravity causes the ball to accelerate at a constant rate.

Differences between Uniform Velocity and Uniform Acceleration:
1. Definition: Uniform velocity refers to the motion of an object with a constant speed and direction, while uniform acceleration refers to the motion of an object that experiences a constant change in velocity over time.
2. Change in Velocity: In uniform velocity, there is no change in velocity as the object maintains a constant speed and direction, while in uniform acceleration, the velocity of an object changes at a constant rate.
3. Direction: In uniform velocity, the object maintains a constant direction of motion, while in uniform acceleration, the direction of motion may also change as the object accelerates.
4. Speed: In uniform velocity, the object maintains a constant speed, while in uniform acceleration, the speed of an object changes at a constant rate.
5. Examples: Examples of uniform velocity include a car moving in a straight line at a constant speed, while examples of uniform acceleration include a ball rolling down a ramp or a rocket taking off.

Conclusion:
In summary, the main difference between uniform velocity and uniform acceleration is that uniform velocity refers to the motion of an object with a constant speed and direction, while uniform acceleration refers to the motion of an object that experiences a constant change in velocity over time. Understanding these concepts is important in physics as they help explain the motion of objects in the world around us.