ruin : is: the state of being severely damaged or spoiled, or the process
of reaching this state...7 if something is in ruins, it is completely spoiled.
EG...a civilization that was in ruin
 Brickyard, via Brigata Framarin
                              to ruin:  to ruin something means to severely damage or spoil it. EG
you are ruining your health...villages had been burned and ruined...
  La Rotonda from via Riviera Berica
excerpts from the Collins-Cobuild English Language Dictionary