確保
かくほ · kakuho · JLPT N1 · noun
secure
🔒 確 (sure) + 保 (keep): make sure you keep it, so it is guaranteed or secured
確 means certain or sure, and 保 means keep or hold. Together they mean keeping something certain, so it is guaranteed, insured, or secured.
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.'