会長【かいちょう】
president (of a society), chairman
社長【しゃちょう】
company president, manager, director
長男【ちょうなん】
eldest son (may be the only son), first-born son
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
成長【せいちょう】
growth, development, growing up, becoming an adult, growth (of a company, the economy, etc.)
長期【ちょうき】
long-term
市長【しちょう】
mayor
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)
課長【かちょう】
section manager, section chief
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