As nouns the difference between tsunami and flooding
is that tsunami
is while flooding
is an act of flooding; a flood or gush.
As a verb flooding is
* sunami (nonstandard)
A very large and destructive wave, generally caused by a tremendous disturbance in the ocean, such as an undersea earthquake or volcanic eruption.
* tidal wave (usage conflict)
* natural disaster
* tidal wave
An act of flooding; a flood or gush.
* (Mark Twain)
- And by the same token it was plain that there had also been a hundred and seventy-five floodings of the earth and depositings of limestone strata!