office; business premises
办 · 4 strokes
Simplified form of 辦. Phonosemantic compound. 力 represents the meaning and 辡 represents the sound.
公 · 4 strokes
Pictograph of a earthen jar for holding liquid, now written as 瓮. The current meaning "public" is a phonetic loan.
室 · 9 strokes
Phonosemantic compound. 宀 represents the meaning and 至 represents the sound.