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Yes, the docs I am writing will absolutely be explaining all of those terms in detail and are aimed at getting non-programmers up to speed on how behavior trees work (with notes for programmers as well, but easily skipped by non-programmers).
The only reason I used those terms casually here was that they are shown in the UI, and I was writing response rather quickly.
Perhaps I’ll post about the different types of nodes soon as I’m just about to go over my notes on node types and make them readable. Then I can take feedback on my explanations into account for the official docs. Which of course implies using all of the common forum posters here as my guinea pigs on how clear my explanations are. :p. I’ve been trying to perform my doc-testing on some folks at Epic first to avoid sewing confusion here. 
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Here’s another thread if you could take a look :D… Behavior Tree C++ related.