This is the 8952nd most frequent Japanese word.
水没
"Submersion" or "flooding."
Here, '水没' (suibotsu) means 'immersion in water' and refers to the act of the smartphone being submerged, causing damage.
このスマートフォンは水没によって故障しました。
This smartphone broke due to immersion in water.
In this sentence, '水没' describes the result of extensive water coverage in a flood scenario, specifically affecting geographical areas.
洪水によって低い地域が水没した。
The low-lying areas were submerged due to the flood.
Here, '水没' is used to describe personal occurrence or experience concerning immersion or submergence in water.