demise [demises](end, downfall, or failure) noun [UK: dɪ.ˈmaɪz] [US: ˌdɪ.ˈmaɪz]
disappearance [disappearances](action of disappearing or vanishing) noun [UK: ˌdɪ.sə.ˈpɪə.rəns] [US: ˌdɪ.sə.ˈpɪ.rəns]We reported his disappearance. = Reportamos su desaparición.