林
はやし · hayashi · JLPT N4 · noun
forest
🌲🌲 林 = 木 + 木: two trees side by side make a woods
One 木 is a tree, two make 林 (woods), three make 森 (forest). The reading hayashi is traditionally linked to the verb hayasu, to let grow: a hayashi is a place where trees have been let grow thick.