It seems that words for tea that derived from "cha" spread across land, while the ones originating from "tea" developed over sea routes. https://qz.com/1176962

It seems that words for tea that derived from "cha" spread across land, while the ones originating from "tea" developed over sea routes. https://qz.com/1176962/map-how-the-word-tea-spread-over-land-and-sea-to-conquer-the-world/ https://qz.com/1176962/map-how-the-word-tea-spread-over-land...