| 1 | 线 | 綫 | xiàn | xian4 | thread; string; wire; line; Classifiers: 条 ,股 ,根 ; (after a number) tier (unofficial ranking of a Chinese city); variant of 线 | | |
| 2 | 路线 | 路線 | lù xiàn | lu4 xian4 | itinerary; route; political line (e.g. right revisionist road); Classifiers: 条 | | |
| 3 | 直线 | 直線 | zhí xiàn | zhi2 xian4 | straight line; sharply (rise or fall) | | |
| 4 | 线段 | 線段 | xiàn duàn | xian4 duan4 | line segment | | |
| 5 | 光线 | 光線 | guāng xiàn | guang1 xian4 | light ray; Classifiers: 条 ; light; illumination; lighting (for a photograph) | | |
| 6 | 射线 | 射線 | shè xiàn | she4 xian4 | ray | | |
| 7 | 线圈 | 線圈 | xiàn quān | xian4 quan1 | solenoid (electrical engineering); coil | | |
| 8 | 曲线 | 曲線 | qū xiàn | qu1 xian4 | curve; curved line; indirect; in a roundabout way | | |
| 9 | 导线 | 導線 | dǎo xiàn | dao3 xian4 | electrical lead | | |
| 10 | 统一战线 | 統一戰線 | tǒng yī zhàn xiàn | tong3 yi1 zhan4 xian4 | united front | | |
| 11 | 线索 | 線索 | xiàn suǒ | xian4 suo3 | trail; clues; thread (of a story) | | |
| 12 | 无线电 | 無線電 | wú xiàn diàn | wu2 xian4 dian4 | wireless | | |
| 13 | 线条 | 線條 | xiàn tiáo | xian4 tiao2 | line (in drawing, calligraphy etc); the lines or contours of a three-dimensional object (hairstyle, clothing, car etc) | | |
| 14 | 前线 | 前線 | qián xiàn | qian2 xian4 | front line; military front; workface; cutting edge | | |
| 15 | 线路 | 線路 | xiàn lù | xian4 lu4 | line; circuit; wire; road; railway track; bus route | | |
| 16 | 视线 | 視線 | shì xiàn | shi4 xian4 | line of sight | | |
| 17 | 电线 | 電線 | diàn xiàn | dian4 xian4 | wire; power cord; Classifiers: 根 | | |
| 18 | 一线 | 一線 | yī xiàn | yi1 xian4 | front line | | |
| 19 | 界线 | 界線 | jiè xiàn | jie4 xian4 | limits; bounds; dividing line | | |
| 20 | 对角线 | 對角線 | duì jiǎo xiàn | dui4 jiao3 xian4 | (geometry) a diagonal | | |
| 21 | 天线 | 天線 | tiān xiàn | tian1 xian4 | antenna; mast; connection with high-ranking officials | | |
| 22 | 线上 | 線上 | xiàn shàng | xian4 shang4 | online | | |
| 23 | 切线 | 切線 | qiē xiàn | qie1 xian4 | tangent line (geometry) | | |
| 24 | 线性 | 線性 | xiàn xìng | xian4 xing4 | linear; linearity | | |
| 25 | 群众路线 | 群眾路線 | qún zhòng lù xiàn | qun2 zhong4 lu4 xian4 | the mass line, CCP term for Party policy aimed at broadening and cultivating contacts with the masses | | |