Pinyin: Jiang1 nan2 Definition: south of Changjiang or Yangtze river/south of the lower reaches of Changjiang/often refers to south Jiangsu, south Anhui and north Zhejiang provinces/a province during Qing times/in literature, refers to the sunny south
Pinyin: Jiang1 hu2 Definition: rivers and lakes/around the whole country/cf 两江 and 两湖, Jiangnan, Jiangxi, Hubei, Hunan provinces in Qing times/vagrant/itinerant (esp. entertainer, swindler, quack doctor etc)
Pinyin: Hei1 long2 jiang1 Definition: Heilongjiang province (Heilungkiang) in northeast China, abbr. 黑, capital Harbin 哈尔滨/Heilongjiang river forming the border between northeast China and Russia/Amur river
Pinyin: di4 qu1 Definition: local/regional/district (not necessarily formal administrative unit)/region/area/as suffix to city name, means prefecture or county (area administered by a prefecture level city or county level city)/CL:個|个[ge4]
Pinyin: Zhong1 shan1 qu1 Definition: Zhongshan or Chungshan district of Taipei City 臺北市|台北市[Tai2 bei3 shi4], Taiwan/Zhongshan district of Dalian 大連市|大连市[Da4 lian2 shi4], Liaoning/Chungshan district of Keelung City 基隆市[Ji1 long2 shi4], Taiwan
Pinyin: da4 Zhong1 hua2 qu1 Definition: greater China/refers to China, Taiwan, Hong Kong and Macau (esp. in finance and economics)/refers to all areas of Chinese presence (esp. in the cultural field), including parts of Southeast Asia, Europe and the Americas
Pinyin: Hai3 dian4 qu1 Definition: Haidian inner district of northeast Beijing, includes Beijing University, Tsinghua University 清華大學|清华大学[Qing1 hua2 da4 xue2] and Zhongguancun 中關村|中关村[Zhong1 guan1 cun1]
Decomposition Levels: Level 1: Only divided once. So only two components. Level 2: Radical Decomposition. The character gets decomposed into its lowest radical components. For the complete list visit the Radical wikipedia page. Level 3: Graphical Decomposition. Shows all the strokes & lowest level of components that make up the character. If you see questions marks or too many "block" characters, especially when it comes to level 3 decomposition you might need the correct font.