西部 (せいぶ)western part; the west (of a region); the West (United States)

西部, its kanji, and other words that share them.Open this graph

Kanji in 西部

西にしwest
西側にしがわwest side; west bank
関西かんさいKansai; region consisting of Osaka, Kobe, Kyoto and surrounding prefectures
東西とうざいeast and west
大西洋たいせいようAtlantic Ocean
西欧せいおうWestern Europe
南西なんせいsouthwest
西日本にしにほんwestern Japan; Japan west of the Itoigawa-Shizuoka Tectonic Line, i.e. the Chūbu region and westward
一部いちぶone part; one portion
幹部かんぶmanagement; (executive) staff
本部ほんぶheadquarters; head office
部分ぶぶんportion; section
部長ぶちょうhead (chief, director) of a section or department
部門ぶもんdivision (of a larger group); branch
内部ないぶinterior; inside
学部がくぶdepartment of a university

See how 西部 connects to the rest of Japanese.