In a recent post, I mentioned that the word transdual acknowledges the process that leads into it, something nondual does not.
The word transdual also has another benefit: It reminds me about both ends of any polarity. When I say existence it reminds me of non-existence. When I say awakening it reminds me of integration. Whenever I focus on one end of any polarity, it reminds me that the other is there as well.