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
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.