| 杞 | qǐ | Chinese wolfberry shrub (Lycium chinense); willow; surname Qi; Zhou Dynasty vassal state |
| 杞人之忧 | Qǐ rén zhī yōu | man of Qǐ fears the sky falling (idiom); groundless fears |
| 杞人忧天 | Qǐ rén yōu tiān | man of Qǐ fears the sky falling (idiom); groundless fears |
| 杞国 | Qǐ guó | the State of Qǐ in modern Qǐ county 杞县, Henan (c. 1500-445 BC), a small vassal state of Shang and Western Zhou for most of its existence |
| 杞国之忧 | Qǐ guó zhī yōu | man of Qǐ fears the sky falling (idiom); groundless fears |
| 杞国忧天 | Qǐ guó yōu tiān | man of Qǐ fears the sky falling (idiom); groundless fears |
| 杞天之虑 | Qǐ tiān zhī lǜ | man of Qǐ fears the sky falling (idiom); groundless fears |
| 杞梓之林 | Qǐ zǐ zhī lín | forest of wolfberry and catalpa (Lycium chinense and Catalpa ovata, idiom); fig. great quantity of talent |
| 杞县 | Qǐ xiàn | Qi county in Kaifeng 开封, Henan |
| 枸杞 | gǒu qǐ | wolfberry shrub (Lycium chinense) |
| 枸杞子 | gǒu qǐ zi | fruit of Chinese wolfberry (Lycium chinense) |
| 柳杞 | liǔ qǐ | willow |
