| 同时HSK 4 | tóng shí | at the same time; simultaneously | |
| 同志HSK 6 | tóng zhì | comrade; (slang) homosexual; Classifiers: 个 | |
| 共同HSK 4 | gòng tóng | common; joint; jointly; together; collaborative | |
| 同样 | tóng yàng | same; equal; equivalent | |
| 同学HSK 1 | tóng xué | to study at the same school; fellow student; classmate; Classifiers: 位 |
| 胡同HSK 5 | hú tòng | lane; alley; Classifiers: 条 | |
| 死胡同 | sǐ hú tòng | dead end; blind alley |
| 1 | We are classmates. | |
| 2 | We are classmates in the same class. | |
| 3 | He and she are classmates. | |
| 4 | He nodded to show his agreement. | |
| 5 | That young lady is my classmate. |