| 同时 | tóng shí | at the same time; simultaneously |
| 不同 | bù tóng | different; distinct; not the same; not alike |
| 同志 | tóng zhì | comrade; homosexual (slang); CL:个 |
| 相同 | xiāng tóng | identical; same |
| 同样 | tóng yàng | same; equal; equivalent |
| 共同 | gòng tóng | common; joint; jointly; together; collaborative |
| 同一 | tóng yī | identical; the same |
| 同意 | tóng yì | to agree; to consent; to approve |
| 同学 | tóng xué | to study at the same school; fellow student; classmate; CL:位,个 |
| 同盟会 | Tóng méng huì | Tongmenghui, Sun Yat-sen's alliance for democracy, founded 1905, became the Guomindang 国民党 in 1912 |
| 合同 | hé tong | (business) contract; CL:个 |
| 同情 | tóng qíng | compassion; relent; sympathize; sympathy |
| 同胞 | tóng bāo | born of the same parents; sibling; fellow citizen; compatriot |
| 同上 | tóng shàng | as above; ditto; idem |
| 同期 | tóng qī | the corresponding time period (e.g. compare inflation now with the rate during the same month last year) |
