The risks involved in a situation cannot be expected
"The probability of obtaining a result different from what was expected"
And since we know what the risk is, we need to know what its importance is from a financial perspective?
"The probability of obtaining a financial return on the investment differs from what was expected."
It is often said that trading in financial markets means trading with risk.
For example: "When I buy EUR / USD, I really see that the euro exchange rate will rise against the US dollar."
The risk is that the euro will likely weaken against the US dollar - a reversal in prices.
In other words, a financial risk is the possibility of losing part or all of your original investment.