| 1 | 观察 | 觀察 | guān chá | guan1 cha2 | to observe; to watch; to survey; to examine; observation; view; perspective; Classifiers: 个 | | |
| 2 | 考察 | 考察 | kǎo chá | kao3 cha2 | to inspect; to observe and study; on-the-spot investigation | | |
| 3 | 警察 | 警察 | jǐng chá | jing3 cha2 | police; police officer; Classifiers: 个 | | |
| 4 | 侦察 | 偵察 | zhēn chá | zhen1 cha2 | to investigate a crime; to scout; to reconnoiter; reconnaissance; detection; a scout | | |
| 5 | 觉察 | 覺察 | jué chá | jue2 cha2 | to sense; to perceive; to come to realize; to be aware | | |
| 6 | 视察 | 視察 | shì chá | shi4 cha2 | to inspect; an investigation | | |
| 7 | 察 | 察 | chá | Cha2 | to examine; to inquire; to observe; to inspect; to look into; obvious; clearly evident; short name for Chahar Province 察哈尔 ; variant of 察 | | |
| 8 | 察觉 | 察覺 | chá jué | cha2 jue2 | to sense; to perceive; to become aware of; to detect | | |
| 9 | 察看 | 察看 | chá kàn | cha2 kan4 | to watch; to look carefully at | | |
| 10 | 检察官 | 檢察官 | jiǎn chá guān | jian3 cha2 guan1 | public prosecutor; public procurator (judicial officer whose job may involve both criminal investigation and public prosecution) | | |
| 11 | 观察者 | 觀察者 | guān chá zhě | guan1 cha2 zhe3 | observer | | |
| 12 | 检察 | 檢察 | jiǎn chá | jian3 cha2 | to inspect; (law) to prosecute; to investigate | | |
| 13 | 侦察员 | 偵察員 | zhēn chá yuán | zhen1 cha2 yuan2 | detective; investigator; scout; spy | | |
| 14 | 波德戈里察 | 波德戈里察 | bō dé gē lǐ chá | Bo1 de2 ge1 li3 cha2 | Podgorica, capital of Montenegro | | |
| 15 | 察访 | 察訪 | chá fǎng | cha2 fang3 | to make an investigative visit; to go and find out from the source | | |
| 16 | 察微知著 | 察微知著 | chá wēi zhī zhù | cha2 wei1 zhi1 zhu4 | to examine tiny clues to know general trends (idiom); to deduce the whole story from small traces | | |
| 17 | 察雅 | 察雅 | chá yǎ | Cha2 ya3 | Zhag'yab county, Tibetan: Brag g-yab rdzong, in Chamdo prefecture 昌都地区 , Tibet | | |
| 18 | 察雅县 | 察雅縣 | chá yǎ xiàn | Cha2 ya3 xian4 | Zhag'yab county, Tibetan: Brag g-yab rdzong, in Chamdo prefecture 昌都地区 , Tibet | | |
| 19 | 最高人民检察院 | 最高人民檢察院 | zuì gāo rén mín jiǎn chá yuàn | Zui4 gao1 Ren2 min2 Jian3 cha2 yuan4 | PRC Supreme People's Procuratorate (prosecutor's office) | | |
| 20 | 察尔汗盐湖 | 察爾汗鹽湖 | chá ěr hán yán hú | Cha2 er3 han2 Yan2 hu2 | Qarhan Salt Lake in west Qinghai | | |
| 21 | 察察为明 | 察察為明 | chá chá wéi míng | cha2 cha2 wei2 ming2 | keenly observant of trivial details | | |
| 22 | 察察 | 察察 | chá chá | cha2 cha2 | clean; spotless | | |
| 23 | 察布查尔锡伯自治县 | 察布查爾錫伯自治縣 | chá bù chá ěr xī bó zì zhì xiàn | Cha2 bu4 cha2 er3 Xi1 bo2 Zi4 zhi4 xian4 | Qapqal Xibe autonomous county in Ili Kazakh autonomous prefecture 伊犁哈萨克自治州 , Xinjiang | | |
| 24 | 察布查尔 | 察布查爾 | chá bù chá ěr | Cha2 bu4 cha2 er3 | Qapqal Xibe autonomous county in Ili Kazakh autonomous prefecture 伊犁哈萨克自治州 , Xinjiang | | |
| 25 | 便衣警察 | 便衣警察 | biàn yī jǐng chá | bian4 yi1 jing3 cha2 | plain-clothed policeman | | |