坡
pō · HSK 6
slope
⛰️ pō sounds like 'pour' — water pours down a slope
The left radical 土 (earth/soil) plus 皮 (skin/surface) = the skin of the earth, its tilted surface. Think: the earth's outer layer angled so water pours off it.
坡 — earth radical 土 + skin 皮 (phonetic)
坡 is a semantic-phonetic compound. The earth radical 土 gives the meaning, indicating land or terrain, while 皮 (pí) supplies the sound, shifted to pō. It originally referred to a sloping piece of ground, and still means slope, hillside, or incline today.