little island 坐 / 座: how to tell them apart
坐 is the action (坐下). 座 has the roof 广 over it — a seat or a building (座位, 一座山).
坐 zuò — to sit
坐
| 坐满了 | zuò mǎn le | fully seated | 2B lesson 16 |
座 zuò — seat; measure word for mountains and buildings
座
| 座位 | zuò wèi | seat | 2A lesson 7 | |
| 优先座位 | yōu xiān zuò wèi | priority seat | 4A lesson 9 |