| 1 | 空 | 空 | kòng | kong4 | to empty; vacant; unoccupied; space; leisure; free time | | |
| 2 | 空白 | 空白 | kòng bái | kong4 bai2 | blank space | | |
| 3 | 空隙 | 空隙 | kòng xì | kong4 xi4 | crack; gap between two objects; gap in time between two events | | |
| 4 | 空地 | 空地 | kòng dì | kong4 di4 | vacant land; open space | | |
| 5 | 有空 | 有空 | yǒu kòng | you3 kong4 | to have time (to do sth) | | |
| 6 | 完型填空 | 完型填空 | wán xíng tián kòng | wan2 xing2 tian2 kong4 | cloze (pedagogy); cloze (pedagogy) | | |
| 7 | 空白支票 | 空白支票 | kòng bái zhī piào | kong4 bai2 zhi1 piao4 | blank check | | |
| 8 | 航空票务 | 航空票務 | háng kòng piào wù | hang2 kong4 piao4 wu4 | Air ticketing | | |
| 9 | 空档 | 空檔 | kòng dàng | kong4 dang4 | Empty; ; gap (between two objects); interval of time (between events); opening in one's schedule; free time; (fig.) gap (in the market etc) | | |
| 10 | 空当 | 空當 | kòng dāng | kong4 dang1 | gap; interval | | |
| 11 | 空白点 | 空白點 | kòng bái diǎn | kong4 bai2 dian3 | gap; empty space | | |
| 12 | 净化空气 | 淨化空氣 | jìng huà kòng qì | jing4 hua4 kong4 qi4 | Purifying the air | | |
| 13 | 交流空间 | 交流空間 | jiāo liú kòng jiān | jiao1 liu2 kong4 jian1 | Communication space | | |
| 14 | 安德鲁斯空军基地 | 安德魯斯空軍基地 | ān dé lǔ sī kòng jūn jī de | an1 de2 lu3 si1 kong4 jun1 ji1 de5 | Andrews Air Force Base | | |
| 15 | 航空兵 | 航空兵 | háng kòng bīng | hang2 kong4 bing1 | Air force | | |
| 16 | 海南航空 | 海南航空 | hǎi nán háng kòng | hai3 nan2 hang2 kong4 | Hainan Airlines | | |
| 17 | 海陆空 | 海陸空 | hǎi lù kòng | hai3 lu4 kong4 | sea land air (transport, or military operations) | | |
| 18 | 钻空子 | 鑽空子 | zuān kòng zi | zuan1 kong4 zi5 | lit. to drill a hole; to take advantage of a loophole; to exploit an advantage; to seize the opportunity (esp. to do sth bad) | | |
| 19 | 国际航空 | 國際航空 | guó jì háng kòng | guo2 ji4 hang2 kong4 | International Aviation | | |
| 20 | 放空枪 | 放空槍 | fàng kòng qiāng | fang4 kong4 qiang1 | Release the gun | | |
| 21 | 得空 | 得空 | dé kòng | de2 kong4 | to have leisure time | | |
| 22 | 存储空间 | 存儲空間 | cún chǔ kòng jiān | cun2 chu3 kong4 jian1 | Storage space | | |
| 23 | 抽空 | 抽空 | chōu kòng | chou1 kong4 | to find the time to do sth | | |
| 24 | 吃空饷 | 吃空餉 | chī kòng xiǎng | chi1 kong4 xiang3 | to embezzle by adding to the payroll employees existing in name only | | |
| 25 | 吃空额 | 吃空額 | chī kòng è | chi1 kong4 e4 | to embezzle by adding to the payroll employees existing in name only | | |