"مصيبة وداهية" Are almost the same meaning. "Calamity" "قرف" means "Disgust". "شناعة" means "Atrocity" or "horribleness" I don't know what "بلال" means, i am sorry

as for وبلال ; I think you want to write وبال which means : disease we use it to insult someone in egyption dialect ; when we say : دا انت وبال