Flood
Part of speech: noun
Definition: A (usually disastrous) overflow of water from a lake or other body of water due to excessive rainfall or other input of water. A large number or quantity of anything appearing more rapidly than can easily be dealt with.
Part of speech: verb
Definition: To overflow. To cover or partly fill as if by a flood. To provide (someone or something) with a larger number or quantity of something than can easily be dealt with. To paste numerous lines of text to a chat system in order to disrupt the conversation.
Tsunami
Part of speech: noun
Definition: A very large and destructive wave, generally caused by a tremendous disturbance in the ocean, such as an undersea earthquake or volcanic eruption.
Example sentence: The generosity of the American public toward the victims of Hurricane Katrina and the Tsunami has been reflected in the outpouring of support for the Pakistani earthquake victims.