First let me say this is MY PERSONAL OBSERVATION 🙂
I don't think all the words in Appendix 1 were chosen based on one single logic or plan. I believe each word was reviewed and voted on and then added to the list (or not, as the case may have been). It's a list that you really just need to have available in a place where it's easy to check if needed...and sometimes even when you are just curious if the word you are looking for might be on the list.
I'm sorry I can't provide a better answer here. I've tried and tried to apply my logic to that list and there is always an exception to my logic...so I have the list in a place I can use it frequently.