| 孔 |
kǒng dòng | small hole in an object |
| 孔 |
Kǒng | surname Kong |
| 孔 |
kǒng | hole / CL:个 / classifier for cave dwellings |
| 洞 |
dòng | cave / hole / zero (unambiguous spoken form when spelling out numbers) / CL:个 |
| 洞 |
tóng | used in 洪洞 (the name of a place in Shanxi) |