| 共同社 | Gòng tóng shè | Kyōdō, Japanese news agency |
| 共同筛选 | gòng tóng shāi xuǎn | collaborative filtering |
| 共同闸道介面 | gòng tóng zhá dào jiè miàn | Common Gateway Interface; CGI |
| 共同点 | gòng tóng diǎn | common ground |
| 刺激启动不同步 | cì jī qǐ dòng bù tóng bù | stimulus onset asymmetry |
| 劳动合同 | láo dòng hé tong | labor contract; contract between employer and employees governing wages and conditions |
| 协同作用 | xié tóng zuò yòng | synergy; cooperative interaction |
| 可转换同位素 | kě zhuǎn huàn tóng wèi sù | fertile isotope |
| 台湾民主自治同盟 | Tái wān Mín zhǔ Zì zhì Tóng méng | Taiwan Democratic Self-Government League |
| 各不相同 | gè bù xiāng tóng | to have nothing in common with each other (idiom) |
| 合同各方 | hé tong gè fāng | parties to a contract (law) |
| 合同法 | hé tong fǎ | contract law |
同一个世界，
同一个梦想 | tóng yī gè shì jiè ,
tóng yī gè mèng xiǎng | One world - one dream, motto of 2008 Beijing Olympic games |
| 同仁堂 | Tóng Rén Táng | Tong Ren Tang |
| 同仁县 | Tóng rén xiàn | Tongren county in Huangnan Tibetan autonomous prefecture 黄南藏族自治州, Qinghai |
| 同仇敌忾 | tóng chóu dí kài | anger against a common enemy (idiom); joined in opposition to the same adversary |
| 同位 | tóng wèi | par |
| 同位素分离 | tóng wèi sù fēn lí | isotopic separation |
| 同传耳麦 | tóng chuán ěr mài | simultaneous interpretation headset |
| 同侪 | tóng chái | peer; member of the same class, generation or social group |
| 同侪团体 | tóng chái tuán tǐ | peer group |
| 同侪压力 | tóng chái yā lì | peer pressure |
| 同侪审查 | tóng chái shěn chá | peer review |
| 同侪扶持 | tóng chái fú chí | peer support |
| 同侪检视 | tóng chái jiǎn shì | peer review |
| 同侪谘商 | tóng chái zī shāng | peer counseling |
| 同分异构体 | tóng fēn yì gòu tǐ | isomer |
| 同卵 | tóng luǎn | (of twins) identical; monozygotic |
| 同卵双胞胎 | tóng luǎn shuāng bāo tāi | identical twins |
| 同名同姓 | tóng míng tóng xìng | having same given name and family name |
| 同喜 | tóng xǐ | Thank you for your congratulations!; The same to you! (returning a compliment) |
| 同在 | tóng zài | to be with |
| 同型性 | tóng xíng xìng | isomorphism |
| 同型配子 | tóng xíng pèi zǐ | isogamete |
| 同堂 | tóng táng | to live under the same roof (of different generations) |
| 同字框 | tóng zì kuàng | name of radical in Chinese characters (Kangxi radical 13); see also 冂 |
| 同学们 | tóng xué men | classmates; fellow students |
| 同安 | Tóng ān | Tong'an district of Xiamen city 厦门市 (Amoy), Fujian |
| 同安区 | Tóng ān qū | Tong'an district of Xiamen city 厦门市 (Amoy), Fujian |
| 同安县 | Tóng ān xiàn | former Tong'an county, now Tong'an district 同安区 of Xiamen city, Fujian |
| 同室操戈 | tóng shì cāo gē | wielding the halberd within the household (idiom); internecine strife |
| 同工 | tóng gōng | fellow workers |
| 同床异梦 | tóng chuáng yì mèng | lit. to share the same bed with different dreams (idiom); ostensible partners with different agendas; strange bedfellows; marital dissension |
| 同德 | Tóng dé | Tongde county in Hainan Tibetan autonomous prefecture 海南藏族自治州, Qinghai |
| 同德县 | Tóng dé xiàn | Tongde county in Hainan Tibetan autonomous prefecture 海南藏族自治州, Qinghai |
| 同心县 | Tóng xīn xiàn | Tongxin county in Wuzhong 吴忠, Ningxia |
| 同性爱 | tóng xìng ài | homosexual |
| 同性恋 | tóng xìng liàn | homosexuality; gay person; gay love |
| 同性恋恐惧症 | tóng xìng liàn kǒng jù zhèng | homophobia |
| 同性恋者 | tóng xìng liàn zhě | homosexual; gay person |
