| 世纪 | shì jì | century; Classifiers: 个 | |
| 纪念 | jì niàn | to commemorate; to remember; Classifiers: 个 | |
| 纪录 | jì lù | variant of 记录 (but in Taiwan, not for the verb sense "to record") | |
| 年纪 | nián jì | age; Classifiers: 把 | |
| 违纪 | wéi jì | lack of discipline; to break a rule; to violate discipline; to breach a principle |
| 1 | Discipline must be strictly observed during wartime. | |
| 2 | He often takes walks at Century Square. | |
| 3 | He wants to break this record. | |
| 4 | We are now living in the 21st century. | |
| 5 | Recently, I really enjoy watching documentaries. |
