相
そう · sou · JLPT N3 · suffix
phase
👁️🌳 相 = 木 tree + 目 eye: an eye studying a tree sees its aspect
The kanji sets 木 (tree) beside 目 (eye), so its core idea is how something looks when you examine it. That gives aspect, phase (how things look at one stage) and countenance (how a face looks). Read as そう in words like 様相 (yōsō), meaning aspect or appearance.