4.2.3a "Preparation of Quality Plans" vs. 4.2.3.7 "Control Plan" - Differences?

[Andrews]

4.2.3a requires " preparation of quality plans" whereas 4.2.3.7 requires "control plan" to be developed.

What is the difference between the two?

 

[Marc]

See this thread: Difference between the Quality Plan vs. Control Plan. I think there is another thread in which this is discussed but I couldn't find it off hand.