A particle travels in a circular path at a uniform speed. Its...

A particle moving in a circular path at a uniform speed completes one revolution in a fixed time interval, $T = \dfrac{2\pi r}{v}$. Since the motion repeats itself after equal intervals of time, it is periodic.

The motion is not oscillatory because the particle does not move to and fro about a fixed point. Consequently, it is neither simple harmonic nor angular simple harmonic.