In Buddha Dhamma, “dukkha” is not just “suffering.” It can be “suffering” or “cause for suffering,” depending on the context.
– In fact, the First Noble Truth is about “causes of suffering.” That is sankhara arising due to avijja!
We can look at it this way.
– sankhara dukkha can be in both categories.
– Dukkha dukkha and viparinama dukkha fall under “suffering” or “vipaka.”