교통transportation; traffic 교통비fare; transportation expense 교통사고traffic accident; car crash 교환exchange 교대rotation; shift 교류mixture of currents; intersection of streams 교통경찰traffic police 교통난traffic congestion; traffic jam 교통량traffic volume; traffic density 교통수단means of transportation

교우school friend; colleague 우정friendship 학우school friend; classmate 교우brethren 급우classmate 동우회club 문방사우The Four Friends of the Study 문우literary friend 우군ally; friendly forces 우방friendly nation; ally