| 1 | 理论 | 理論 | lǐ lùn | li3 lun4 | theory; Classifiers: 个 ; to argue; to take notice of | | |
| 2 | 管理 | 管理 | guǎn lǐ | guan3 li3 | to supervise; to manage; to administer; management; administration; Classifiers: 个 | | |
| 3 | 心理 | 心理 | xīn lǐ | xin1 li3 | psychology; mentality | | |
| 4 | 处理 | 處理 | chǔ lǐ | chu3 li3 | to handle; to treat; to deal with; to process; to deal with a criminal case; to mete out punishment; to offer for sale at a reduced price; to punish | | |
| 5 | 理解 | 理解 | lǐ jiě | li3 jie3 | to comprehend; to understand; comprehension; understanding | | |
| 6 | 合理 | 合理 | hé lǐ | he2 li3 | rational; reasonable; fair | | |
| 7 | 理想 | 理想 | lǐ xiǎng | li3 xiang3 | an ideal; a dream; ideal; perfect | | |
| 8 | 原理 | 原理 | yuán lǐ | yuan2 li3 | principle; theory | | |
| 9 | 心理学 | 心理學 | xīn lǐ xué | xin1 li3 xue2 | psychology | | |
| 10 | 真理 | 真理 | zhēn lǐ | zhen1 li3 | truth; Classifiers: 个 | | |
| 11 | 总理 | 總理 | zǒng lǐ | zong3 li3 | premier; prime minister; Classifiers: 个 | | |
| 12 | 物理 | 物理 | wù lǐ | wu4 li3 | physics; physical | | |
| 13 | 生理 | 生理 | shēng lǐ | sheng1 li3 | physiology | | |
| 14 | 道理 | 道理 | dào lǐ | dao4 li3 | reason; argument; sense; principle; basis; justification; Classifiers: 个 | | |
| 15 | 理由 | 理由 | lǐ yóu | li3 you2 | reason; grounds; justification; Classifiers: 个 | | |
| 16 | 整理 | 整理 | zhěng lǐ | zheng3 li3 | to arrange; to tidy up; to sort out; to straighten out; to list systematically; to collate (data, files); to pack (luggage) | | |
| 17 | 经理 | 經理 | jīng lǐ | jing1 li3 | manager; director; Classifiers: 个 | | |
| 18 | 地理 | 地理 | dì lǐ | di4 li3 | geography | | |
| 19 | 定理 | 定理 | dìng lǐ | ding4 li3 | established theory; theorem (math.) | | |
| 20 | 公理 | 公理 | gōng lǐ | gong1 li3 | axiom (in logic); axiomatic | | |
| 21 | 理 | 理 | lǐ | li3 | texture; grain (of wood); inner essence; intrinsic order; reason; logic; truth; science; natural science (esp. physics); to manage; to pay attention to; to run (affairs); to handle; to put in order; to tidy up | | |
| 22 | 物理学 | 物理學 | wù lǐ xué | wu4 li3 xue2 | physics | | |
| 23 | 办理 | 辦理 | bàn lǐ | ban4 li3 | to handle; to transact; to conduct | | |
| 24 | 推理 | 推理 | tuī lǐ | tui1 li3 | reasoning; inference; to infer; to deduce | | |
| 25 | 理智 | 理智 | lǐ zhì | li3 zhi4 | reason; intellect; rationality; rational | | |