Pinyin: zi4 yang4 Definition: model or template character/words written in large letters (e.g. slogan 標語|标语 on banner, stamp "air mail" 航空 or header "first draft" 初稿 etc)
Pinyin: ren2 qu4 lou2 kong1 Definition: people are gone, the tower is empty; cf Yellow Crane Tower 黄鹤楼, Tang poem by Cui Hao 崔顥|崔颢, with theme the past will never return/nostalgia for old friends
Pinyin: Hong2 lou2 meng4 Definition: A Dream of Red Mansions (first completed edition 1791) by Cao Xueqin 曹雪芹[Cao2 Xue3 qin2], one of the four great novels
Pinyin: Huang2 he4 lou2 Definition: Yellow crane tower in Wuhan city, built in 223, burnt down in 1884, rebuilt in 1985/favored place of poet sages, who in legend arrived riding golden cranes/Tang poem by Cui Hao 崔顥|崔颢, with theme the past will never return/one of three famous pagodas in China along with Yueyang tower 岳阳楼 in Yueyang, north Hunan 湖南岳阳 and Tengwang tower 滕王阁 in Nanchang, Jiangxi 江西南昌
Pinyin: Gu3 lou2 qu1 Definition: Drumtower city district (various)/Gulou district of Nanjing City 南京市[Nan2 jing1 shi4], Jiangsu/Gulou or Drumtower district of Fuzhou city 福州市[Fu2 zhou1 shi4], Fujian
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.