This is the 5397th most frequent Russian word.
падением
"Падением" means "fall" or "decline" in English.
Here, 'падением' is used to describe a decrease or drop in temperature.
С падением температуры растёт риск обледенения дорог.
With the drop in temperature, the risk of road icing increases.
In this sentence, 'падением' refers to a decline in stock market values.
После падения акций компании, инвесторы начали переживать.
After the company's stocks fell, investors began to worry.
Here, 'падением' is used to denote the collapse or downfall of an empire.