• 看護かんご — nursing; care
• 看板かんばん — signboard
• 看守かんしゅ — guard; warden
• 看病かんびょう — caring for the sick
• 看破かんぱ — see through; discern
• 看取みとり — keeping vigil; watching over (one’s final moments)

看 combines 手 (hand) over 目 (eye) — shading the eyes with a hand to look closely or into the distance. From this image come senses like “watch,” “care for,” and “guard.”

彼かれは 母ははを 看病かんびょうしています。
He is taking care of his mother.

看板かんばんが 風かぜで 倒たおれた。
The signboard fell down in the wind.