conclusion, ending, finish - event whose occurrence ends something; "his death marked the ending of an era"; "when these final episodes are broadcast it will be the finish of the show"

annihilation, disintegration - total destruction; "bomb tests resulted in the annihilation of the atoll"

eradication, obliteration - the complete destruction of every trace of something

ravage, depredation - (usually plural) a destructive action; "the ravages of time"; "the depradations of age and disease"

razing, wrecking - the event of a structure being completely demolished and leveled

ruination, ruin - an event that results in destruction

wrack, rack - the destruction or collapse of something; "wrack and ruin"

destruction, devastation - termination by an act of destruction