健全
けんぜん · kenzen · JLPT N1 · na-adj
health
🍎 健 (healthy) + 全 (whole) = kenzen: healthy all the way through, sound and wholesome
健 is the 'healthy' in 健康 (kenkō). 全 means whole or complete. Together they describe something sound throughout, from a body to a society.
全 — enter 入 on top + jade 玉
Originally written as 入 (enter) over 玉 (jade), depicting a complete, unflawed piece of jade kept in storage. From this image of a perfect jade came the meanings 'whole,' 'complete,' and 'entire.' The top component is sometimes written as 人.