智 higher conscious, enlightenment !! [akira]
如来 created, like a child is born, reproduced [nyorai]
Hence an enlightened child = tathagata [Budha]
tathagata has an etymoana: tad-agata which is a direct “mapping”/modification of nyorai [rai means “(yet) to come” sama as Indian: agata, tad means: from it/that/there ]
This is then manipulated to mean various things like Budha means enlightenment hence Indian: Budhi = intellect. Almost all Indian words are created like this, 2ndary understanding. [and now called sanscrit] Also remember budha simply means “elements” or “matter” and the energy from matter. Hence this energy when religiofied into a God thats Budha. [like Bishnuj was Sun and Shibaj was Fire/Flame]
Hence in akira 智 [which as you see heaven+mouth+energy/sun hence higher consciousness] you have a “Budha” and any child of Budha is Budha. We are all Budha. What a brilliant thinking man made 1500 years ago, but it essentially stole from a religion now called Hinduism and they in turn stole it from the Vedic nomads and the Vedic nomads stole it from a minority who achieved “intellectual understanding of nature’s elements” hence Science. Science is often manipulated into religion and then forgotten in due time.