| 不等 | bu4 deng3 | varied |
| 不等式 | bu4 deng3 shi4 | inequality (math.) |
| 不等号 | bu4 deng3 hao4 | inequality sign (i.e. not equal, or greater than , or less than ) |
| 不平等 | bu4 ping2 deng3 | inequality |
| 社会差距 | she4 hui4 cha1 ju4 | social inequality |
| 等周不等式 | deng3 zhou1 bu4 deng3 shi4 | the isoperimetric inequality |