root of an evil; source of a problem; source of trouble; cause of misfortune
war damage; ravages of war; horrors of war
calamity; disaster; catastrophe
fortune and misfortune; prosperity and adversity; good and evil; weal and woe
coronavirus crisis; COVID-19 calamity
calamity; disturbance; disorder; turmoil
traffic disaster; traffic accident
disaster caused by wind and rain
traffic accident; automobile accident