| zī | hard-working/industrious |
| 孜 | hard-working industrious |
| 孜孜 | diligent hardworking industrious |
| 孜孜不倦 | lit. diligent and never slacking (idiom); continuous concentrated effort assiduous (in study) to concentrate |
| 孜孜以求 | diligent and tireless (idiom) |
| 孜孜矻矻 | diligently |
| 孜然 | cumin (Cuminum cyminum) |
| 孜然芹 | cumin |