A solution is what you sell.
A result is what a customer expects.
The solution is what you suggest because you’ve trained yourself to use the corresponding method.
The result is what your customer associates with your work.
Talking about your solution is concentrating on your competences.
Describing a result is a generous way to help your customer see what he will gain through your service.
Sticking to a solution is staying safe.
Proposing a result is your willingness to be responsible.