座头市

• 广(roof; building)RADICAL
• 坐(sit; squat)PHONO-SEMANTIC

A seat is a place under a roof where someone is sitting down.

• 大(large; big)RADICAL
• ⺀(two dots indicating hair; top of head)ASSOCIATIVE

The head is the largest and most prominent part on the human body.

• 亠(lid; cover)ASSOCIATIVE
• 巾(cloth; towel)RADICAL

A market is a place where goods are displayed below and covered by a roof above.