i. Earthquake in recent times : Gujarat, Latur : : Devastating floods in 2018 : Kerala/Assam
ii. Toxic gas leakage: Accidental disaster : : war : Intentional
iii. Sun spots : Atmospheric type of disaster : : Salinization : Geological type of disaster
iv. Pre-disaster management : Preparation and warning : : Post-disaster management : Resurgence and restoration.