What is an outcome?
The result or consequence of a performance in terms of success and failure. The outcome may be absolute, as with a team winning by scoring more goals than opponents, or dependent on the perception of particular individuals
An outcome is what actually happens, while the probability of that outcome is how likely that particular thing is to happen. Say I was flipping a coin. The probability of the outcome of heads is 1/2 because there are 2 possible outcomes and heads is only 1 of them. Then when I flip the coin, it lands on tails. The outcome is tails.