But the fact is he said
, rather than specifically chosing "harmonize" instead of
"combine" or "merge" or any other English term. The folks you mention translated as they did, that I will not argue, and there must have been some reason for the 10th dan rank promotions. But Tohei openly dismissed the way O-sensei presented his thoughts (in terms of kami, etc. see his interviews), so are we really entertaining the idea that Tohei fully respected the intricacies of the religious overtones in O-sensei's lectures? Combined with the famous "when I look back, no one is following me" comment from O-sensei, I do think it remains to be demonstrated if anyone ever has really understood and interpreted for us the entirety of what O-sensei said. Point being-- I don't see any one english term being correct when translating terms like aiki.
But... this is the non-aikido forum. The terms in the OP are the point. Mike, "aiki" and "IP" are the only terms in your list that are not directly related to Chinese (or older) usage. I get conceptually how aiki fits, but is there any direct link just in terms of terminology?