Pinyin: si4 wei2 Definition: the four social bonds: propriety, justice, integrity and honour/see 禮義廉恥|礼义廉耻[li3 yi4 lian2 chi3]/the four directions/the four limbs (Chinese medicine)/four-dimensional
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.