Re: aikido in your country's language
I was taught that ‘Aikido’ broken down into its component parts could be translated as ‘the Way to Union with Ki’. However, while Ai and Do are replaced with Way and Union respectively, Ki has no substitute. Over time I have developed my own functional definition of Ki as power generated by correct feeling, which is engendered by a coordinated mind and body.
Therefore if I were to translate, ‘rename’ in the OP, Aikido into English I would say “the Way (Do) of Unifying (Ai) mind and body so as to experience the power of correct feeling (Ki).”