Nouns

(n)intervention, interferencea policy of intervening in the affairs of other countries
(n)hindrance, hinderance, interferencethe act of hindering or obstructing or impeding
(n)noise, interference, disturbanceelectrical or acoustic activity that can disturb communication
(n)interference(American football) blocking a player's path with your body“he ran interference for the quarterback”
(n)hindrance, hinderance, hitch, preventive, preventative, encumbrance, incumbrance, interferenceany obstruction that impedes or is burdensome