| English | eng-000 |
| lower plane | |
| 普通话 | cmn-000 | 底面 |
| English | eng-000 | back surface |
| English | eng-000 | basal face |
| English | eng-000 | base plate |
| English | eng-000 | base surface |
| English | eng-000 | bottom surface |
| English | eng-000 | soffit |
| English | eng-000 | sole |
| English | eng-000 | subface |