• 平凡へいぼん — ordinary; commonplace
• 凡人ぼんじん — an ordinary person
• 凡例はんれい — explanatory notes; legend (in books/maps)
• 凡庸ぼんよう — mediocre; dull
• 非凡ひぼん — extraordinary; exceptional
• 凡そおよそ — roughly; about; in general

A compact three-stroke form built on the radical 几（つくえ）. Think of a bare little table with nothing special on it — that plain image leads to the sense of “ordinary” or “mediocre.”