一部【いちぶ】
one part, one portion, one section, some, one copy (e.g. of a document)
幹部【かんぶ】
management, (executive) staff, leaders, leadership, top brass, upper echelons
学部【がくぶ】
department of a university, undergraduate (course, program, etc.)
外部【がいぶ】
outside (e.g. of a building), exterior, outside (of a group, company, etc.), outside world
胸部【きょうぶ】
chest, breast
一部分【いちぶぶん】
one part, one portion, one section
患部【かんぶ】
affected part, diseased part, wound
腰部【ようぶ】
loins, hips, pelvic region, waist