Circular Motion Time Graphs

[Illusion3]

Hi guys,

I am very new to the forum (and physics itself). I have only started my O'levels but am a deep physics enthusiast for interesting problems.

When you have circular motion, and you take the displacement from a point on the circle, what type of:

Velocity-time graph
Acceleration-time graph

does it create? I know it has something to do with the graphs creating sine or cosine waves but am not sure why and for which one.

I know it accelerates - and since the speed is the same, wouldn't the velocity be 0 because it goes in circles and ultimately the displacement is 0?

Thanks,