往還[oukan] traffic
還元[kangen] resolution
還俗[genzoku] return to secular life
還流[kanryuu] return current
還暦[kanreki] 60th birthday

還す[kaesu] to send (someone) back
還り[kaeri] return
還る[kaeru] to return
饋還[kikan] repatriation
強制送還[kyouseisoukan] forced repatriation