交通妨害[koutsuubougai] traffic obstruction
妨げ[samatage] obstruction
妨げる[samatageru] to disturb
妨礙[bougai] disturbance
妨害物[bougaibutsu] obstacle

妨業[bougyou] sabotage
妨業員[bougyouin] saboteur
公的不法妨害[koutekifuhoubougai] public nuisance
公務執行妨害[koumushikkoubougai] interference with a public servant in the execution of his or her duties
議事妨害[gijibougai] obstruction of proceedings

障礙[shougai] obstacle
阻礙[sogai] obstruction
妨礙[bougai] disturbance
無礙[muge] free from obstacles

融通無礙[yuuzuumuge] free, unfettered and flexible
障礙者[shougaisha] (physically) handicapped person
縦横無礙[juuoumuge] being as free as the air