That explanation sounds good but I couldn't find much on the doctor=doctrine link. This says the word comes from medieval Latin "docere" which simply means to t

That explanation sounds good but I couldn't find much on the doctor=doctrine link. This says the word comes from medieval Latin "docere" which simply means to teach. Doctrine shares the same root word as doctor, but that root word is simply the notion of teaching and doesn't have inherently religious overtones. https://www.etymonline.com/word/Doctor https://www.etymonline.com/word/Doctor