長男【ちょうなん】
eldest son (may be the only son), first-born son
部長【ぶちょう】
head (chief, director) of a section or department, head of a (school) club, head of a (school) team
会長【かいちょう】
president (of a society), chairman
成長【せいちょう】
growth, development, growing up, becoming an adult, growth (of a company, the economy, etc.)
議長【ぎちょう】
chair, chairman, chairperson, speaker (of an assembly), president (of a council, senate, etc.)
社長【しゃちょう】
company president, manager, director
市長【しちょう】
mayor
課長【かちょう】
section manager, section chief
長期【ちょうき】
long-term
延長【えんちょう】
extension, elongation, prolongation, lengthening, (total) length, extension (e.g. of one's work), continuation, extension (of a line segment), extension (property of occupying space), Enchō era (923.4.11-931.4.26)
官房長官【かんぼうちょうかん】
Chief Cabinet Secretary (Japan), Chief of Staff (to the President, Prime Minister, etc.), Cabinet Secretary, Executive Secretary
副社長【ふくしゃちょう】
executive vice-president
校長【こうちょう】
principal, head teacher, headmaster, headmistress
所長【しょちょう】
head (of an office, laboratory, etc.), chief
長女【ちょうじょ】
eldest daughter, first-born daughter
長年【ながねん】
long time, many years
国務長官【こくむちょうかん】
Secretary of State
室長【しつちょう】
section chief, laboratory manager, office head, room monitor
身長【しんちょう】
height (of body), stature
学長【がくちょう】
(university) president, chancellor, principal, provost