| 1 | 原则 | 原則 | yuán zé | yuan2 ze2 | principle; doctrine; Classifiers: 个 | | |
| 2 | 原因 | 原因 | yuán yīn | yuan2 yin1 | cause; origin; root cause; reason; Classifiers: 个 | | |
| 3 | 原来 | 原來 | yuán lái | yuan2 lai2 | original; former; originally; formerly; at first; so, actually, as it turns out | | |
| 4 | 原子 | 原子 | yuán zǐ | yuan2 zi3 | atom; atomic | | |
| 5 | 原理 | 原理 | yuán lǐ | yuan2 li3 | principle; theory | | |
| 6 | 原始 | 原始 | yuán shǐ | yuan2 shi3 | first; original; primitive; original (document etc) | | |
| 7 | 原料 | 原料 | yuán liào | yuan2 liao4 | raw material; Classifiers: 个 | | |
| 8 | 原 | 原 | yuán | Yuan2 | former; original; primary; raw; level; cause; source; Hara (Japanese surname) | | |
| 9 | 平原 | 平原 | píng yuán | ping2 yuan2 | field; plain; Classifiers: 个 | | |
| 10 | 原有 | 原有 | yuán yǒu | yuan2 you3 | original; former | | |
| 11 | 草原 | 草原 | cǎo yuán | cao3 yuan2 | grassland; prairie; Classifiers: 片 | | |
| 12 | 高原 | 高原 | gāo yuán | gao1 yuan2 | plateau; Classifiers: 片 | | |
| 13 | 原材料 | 原材料 | yuán cái liào | yuan2 cai2 liao4 | raw materials; unprocessed materials | | |
| 14 | 还原 | 還原 | huán yuán | huan2 yuan2 | to restore to the original state; to reconstruct (an event); reduction (chemistry) | | |
| 15 | 原子核 | 原子核 | yuán zǐ hé | yuan2 zi3 he2 | atomic nucleus | | |
| 16 | 原谅 | 原諒 | yuán liàng | yuan2 liang4 | to excuse; to forgive; to pardon | | |
| 17 | 原始社会 | 原始社會 | yuán shǐ shè huì | yuan2 shi3 she4 hui4 | primitive society | | |
| 18 | 四项基本原则 | 四項基本原則 | sì xiàng jī běn yuán zé | Si4 xiang4 Ji1 ben3 Yuan2 ze2 | the Four Cardinal Principles enunciated by Deng Xiaoping 邓小平 in 1979: to uphold the socialist road, the dictatorship of the proletariat, the leadership of the CCP, and Maoism and Marxism-Leninism | | |
| 19 | 中原 | 中原 | zhōng yuán | zhong1 yuan2 | Central Plain, the middle and lower regions of the Yellow river, including Henan, western Shandong, southern Shanxi and Hebei | | |
| 20 | 原先 | 原先 | yuán xiān | yuan2 xian1 | originally; original; former | | |
| 21 | 氢原子 | 氫原子 | qīng yuán zǐ | qing1 yuan2 zi3 | hydrogen atom | | |
| 22 | 原子能 | 原子能 | yuán zǐ néng | yuan2 zi3 neng2 | atomic energy | | |
| 23 | 原则上 | 原則上 | yuán zé shang | yuan2 ze2 shang5 | in principle; generally | | |
| 24 | 青藏高原 | 青藏高原 | qīng zàng gāo yuán | Qing1 Zang4 gao1 yuan2 | Qinghai-Tibetan plateau | | |
| 25 | 原油 | 原油 | yuán yóu | yuan2 you2 | variant of 缘由 ; crude oil | | |