保守
ほしゅ · hoshu · JLPT N1 · noun
conservative
保 — person 亻 + 呆 (child/protect phonetic)
Originally an ideograph showing an adult carrying a child on the back, meaning to protect or shield. The right side 呆 evolved from a depiction of a swaddled infant. Over time the meaning broadened from 'protect a child' to 'preserve, guarantee, keep safe.'
守 — roof 宀 + hand/measure 寸
Originally depicts a hand (寸) under a roof (宀), suggesting someone guarding or maintaining a household. The combination evokes the idea of holding or keeping watch over a place. From this concrete image of guarding a home, the meaning broadened to 'guard,' 'protect,' 'keep,' and 'observe (rules).'