一部【いちぶ】
one part, one portion, one section, some, one copy (e.g. of a document)
部長【ぶちょう】
head (chief, director) of a section or department, head of a (school) club, head of a (school) team
部門【ぶもん】
division (of a larger group), branch, field, class (subclass), group, category, department
幹部【かんぶ】
management, (executive) staff, leaders, leadership, top brass, upper echelons
本部【ほんぶ】
headquarters, head office, main office
部分【ぶぶん】
portion, section, part
内部【ないぶ】
interior, inside, internal
学部【がくぶ】
department of a university, undergraduate (course, program, etc.)
部屋【へや】
room, chamber, apartment, flat, pad, stable
部隊【ぶたい】
force, unit, corps, squad, troops, party
部品【ぶひん】
parts, accessories, components
全部【ぜんぶ】
all, entire, whole, altogether
文部省【もんぶしょう】
Ministry of Education, Science and Culture (1871-2001)
支部【しぶ】
branch, subdivision
南部【なんぶ】
southern part, the south (of a region)
北部【ほくぶ】
northern part, the north (of a region)
東部【とうぶ】
eastern part, the east (of a region)
外部【がいぶ】
outside (e.g. of a building), exterior, outside (of a group, company, etc.), outside world
西部【せいぶ】
western part, the west (of a region), the West (United States)
大部分【だいぶぶん】
most part, greater part, majority