Direction of centripetal acceleration?

Do I have everything pointed in the correct direction?

*Is centripetal acceleration always pointing from the mass to the center?
*Is centripetal acceleration = angular acceleration? Just two names for one thing? It's confusing :(
Update: AH! So with uniform circular motion:
Speed remains the same!
Velocity is changing!
Since speed is unchanging, there would not be tangential acceleration!
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