That is correct.
I now see the root cause of your confusion.
Kamma is action (by the mind, speech, and bodily actions). Kamma vipaka is what happens as a result of that action. Without understanding that one cannot even begin to comprehend laws of kamma, let alone other concepts in Buddha Dhamma.
What is Kamma? – Is Everything Determined by Kamma?
I am beginning to understand why intelligent people get confused about Buddha Dhamma. They do not have a good grasp of fundamentals.