| 1 | 光 | 光 | guāng | guang1 | light; ray; Classifiers: 道 ; bright; only; merely; to use up | | |
| 2 | 阳光 | 陽光 | yáng guāng | yang2 guang1 | sunshine; Classifiers: 线 ; transparent (open to public scrutiny) | | |
| 3 | 目光 | 目光 | mù guāng | mu4 guang1 | sight; vision; view; gaze; look | | |
| 4 | 光线 | 光線 | guāng xiàn | guang1 xian4 | light ray; Classifiers: 条 ; light; illumination; lighting (for a photograph) | | |
| 5 | 眼光 | 眼光 | yǎn guāng | yan3 guang1 | gaze; insight; foresight; vision; way of looking at things | | |
| 6 | 灯光 | 燈光 | dēng guāng | deng1 guang1 | (stage) lighting; light | | |
| 7 | 发光 | 發光 | fā guāng | fa1 guang1 | to shine | | |
| 8 | 光辉 | 光輝 | guāng huī | guang1 hui1 | radiance; glory; brilliant; magnificent | | |
| 9 | 光谱 | 光譜 | guāng pǔ | guang1 pu3 | spectrum | | |
| 10 | 光合作用 | 光合作用 | guāng hé zuò yòng | guang1 he2 zuo4 yong4 | photosynthesis | | |
| 11 | 光学 | 光學 | guāng xué | guang1 xue2 | optics; optical (instrument) | | |
| 12 | 光明 | 光明 | guāng míng | guang1 ming2 | light; radiance; (fig.) bright (prospects etc); openhearted | | |
| 13 | 光荣 | 光榮 | guāng róng | guang1 rong2 | honor and glory; glorious | | |
| 14 | 激光 | 激光 | jī guāng | ji1 guang1 | laser | | |
| 15 | 光照 | 光照 | guāng zhào | guang1 zhao4 | illumination | | |
| 16 | 月光 | 月光 | yuè guāng | yue4 guang1 | moonlight | | |
| 17 | 太阳光 | 太陽光 | tài yáng guāng | tai4 yang2 guang1 | sunlight | | |
| 18 | 闪光 | 閃光 | shǎn guāng | shan3 guang1 | flash | | |
| 19 | 火光 | 火光 | huǒ guāng | huo3 guang1 | flame; blaze | | |
| 20 | 光芒 | 光芒 | guāng máng | guang1 mang2 | rays of light; brilliant rays; radiance | | |
| 21 | 光源 | 光源 | guāng yuán | guang1 yuan2 | light source | | |
| 22 | 风光 | 風光 | fēng guāng | feng1 guang1 | scene; view; sight; landscape; to be well-regarded; to be well-off; grand (dialect); impressive (dialect) | | |
| 23 | 光亮 | 光亮 | guāng liàng | guang1 liang4 | quantity of light; luminosity; bright | | |
| 24 | 光子 | 光子 | guāng zǐ | guang1 zi3 | photon (particle physics) | | |
| 25 | 光电 | 光電 | guāng diàn | guang1 dian4 | photoelectric | | |