| 时期 | shí qī | a period in time or history; period; time (interval); phase; CL:个 |
| 长期 | cháng qī | long term; long time; long range (of a forecast) |
| 期间 | qī jiān | period of time; time; time period; period; CL:个 |
| 周期 | zhōu qī | period; cycle |
| 初期 | chū qī | initial stage; beginning period |
| 后期 | hòu qī | late stage; later period |
| 星期 | xīng qī | week; CL:个; day of the week; Sunday |
| 早期 | zǎo qī | early period; early phase; early stage |
| 定期 | dìng qī | regularly; at regular intervals |
| 同期 | tóng qī | the corresponding time period (e.g. compare inflation now with the rate during the same month last year) |
| 期限 | qī xiàn | time limit; deadline; allotted time |
| 短期 | duǎn qī | short-term |
| 日期 | rì qī | date; CL:个 |
| 周期性 | zhōu qī xìng | periodic; periodicity (math); cyclicity |
