会長【かいちょう】
president (of a society), chairman
議長【ぎちょう】
chair, chairman, chairperson, speaker (of an assembly), president (of a council, senate, etc.)
部長【ぶちょう】
head (chief, director) of a section or department, head of a (school) club, head of a (school) team
社長【しゃちょう】
company president, manager, director
成長【せいちょう】
growth, development, growing up, becoming an adult, growth (of a company, the economy, etc.)
長男【ちょうなん】
eldest son (may be the only son), first-born son
市長【しちょう】
mayor
課長【かちょう】
section manager, section chief
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)
長期【ちょうき】
long-term
副社長【ふくしゃちょう】
executive vice-president
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
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
長年【ながねん】
long time, many years
長女【ちょうじょ】
eldest daughter, first-born daughter
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
学長【がくちょう】
(university) president, chancellor, principal, provost
身長【しんちょう】
height (of body), stature