| 察纳 | chá nà | to investigate and accept |
| 察言观色 | chá yán guān sè | to observe sb's words and gestures (idiom, from Analects); to examine words and moods for a clue as to sb's thoughts; mind reading |
| 察访 | chá fǎng | to make an investigative visit; to go and find out from the source |
| 察隅 | Chá yú | Zayü county, Tibetan: Rdza yul rdzong, in Nyingchi prefecture 林芝地区, Tibet |
| 察隅县 | Chá yú xiàn | Zayü county, Tibetan: Rdza yul rdzong, in Nyingchi prefecture 林芝地区, Tibet |
| 察雅 | Chá yǎ | Zhag'yab county, Tibetan: Brag g-yab rdzong, in Chamdo prefecture 昌都地区, Tibet |
| 察雅县 | Chá yǎ xiàn | Zhag'yab county, Tibetan: Brag g-yab rdzong, in Chamdo prefecture 昌都地区, Tibet |
| 察验 | chá yàn | to examine |
| 康斯坦察 | Kāng sī tǎn chá | Constanta (city in Romania) |
| 按察 | àn chá | to investigate (old) |
| 探察 | tàn chá | to investigate; to observe; to scout; to seek out and examine; to explore |
| 斯雷布雷尼察 | Sī léi bù léi ní chá | Srebrenica, Bosnia-Herzegovina |
| 明察 | míng chá | to note clearly; to perceive |
| 明察暗访 | míng chá àn fǎng | open enquiries and secret search (idiom); to investigate openly and in secret; taking information from all sides |
| 明察秋毫 | míng chá qiū háo | lit. seeing clearly the downy feather of autumn (idiom, from Mencius); fig. sensitive to the finest detail; to distinguish right and wrong with acuity; omniscient |
| 暗察明访 | àn chá míng fǎng | open enquiries and secret search (idiom); to investigate openly and in secret; taking information from all sides |
| 最高人民检察院 | zuì gāo rén mín jiǎn chá yuàn | PRC Supreme People's Procuratorate (prosecutor's office) |
| 检察官 | jiǎn chá guān | the prosecution (in a court case) |
| 检察院 | jiǎn chá yuàn | prosecutor's office; procuratorate |
| 气溶胶侦察仪 | qì róng jiāo zhēn chá yí | aerosol detector |
| 洞察一切 | dòng chá yī qiè | to see everything clearly |
| 洞察力 | dòng chá lì | insight |
| 乌兰察布 | Wū lán chá bù | Ulaanchab prefecture level city in Inner Mongolia |
| 乌兰察布市 | Wū lán chá bù shì | Ulaanchab prefecture level city in Inner Mongolia |
| 特种警察 | tè zhòng jǐng chá | SWAT (Special Weapons And Tactics); riot police |
| 现场视察 | xiàn chǎng shì chá | on-site inspection |
| 皇家香港警察 | Huáng jiā Xiāng Gǎng Jǐng chá | Royal Hong Kong Police Force (1969-1997) |
| 监察人 | jiān chá rén | supervisor; monitor; watchdog |
| 监察局 | jiān chá jú | inspection office; supervisory office |
| 监察院 | jiān chá yuàn | Control yuan, a watchdog under the constitution of Republic of China, then of Taiwan |
| 盘察 | pán chá | to interrogate; to examine |
| 省察 | xǐng chá | to examine oneself |
| 督察 | dū chá | to supervise; to superintend; inspector; censorship |
| 督察大队 | dū chá dà duì | censorship brigade (PRC) |
| 督察小组 | dū chá xiǎo zǔ | supervisory group |
| 科什图尼察 | Kē shí tú ní chá | Kostunica; Vojislav Kostunica (1944-), Serbian politician, prime minister from 2004 |
| 秘密警察 | mì mì jǐng chá | secret police |
| 细察 | xì chá | to observe carefully |
| 美国国家侦察局 | Měi guó Guó jiā Zhēn chá jú | National Reconnaissance Office (of the United States) |
| 考察团 | kǎo chá tuán | inspection team |
| 考察船 | kǎo chá chuán | survey ship |
| 考察队 | kǎo chá duì | investigation team; scientific expedition |
| 肉眼观察 | ròu yǎn guān chá | observation by naked eye |
| 观察人士 | guān chá rén shì | observer |
| 观察力 | guān chá lì | power of observation; perception |
| 观察哨 | guān chá shào | sentry post |
| 观察者 | guān chá zhě | observer |
| 警察局 | jǐng chá jú | police station; police department; police headquarters |
| 警察厅 | jǐng chá tīng | National Police Agency (Japan) |
| 警察署 | jǐng chá shǔ | police station |
