板
bǎn , pàn · HSK 3
board
👔 板 = 木 wood + 反 reverse; a flat plank of wood, also short for 老板 boss
Phono-semantic: 木 (wood) gives the meaning, 反 (fǎn) hints at the sound. Originally a wooden board or plank; by extension used in 老板 (lǎobǎn) for shop owner or boss, the one standing behind the wooden counter.
板 — wood radical 木 + 反 (fǎn, phonetic)
板 is a semantic-phonetic compound. The 木 'wood' radical signals the meaning — a flat piece of wood, i.e. a board or plank. The right side 反 supplies the sound, historically close to 'bǎn/pàn'. Over time it extended to mean any flat panel, and figuratively 'stiff' or 'inflexible'.