A process envolves all the stages from the research to the execution, including the mental thinking. As well as the “evolution”, a process is a walking road, it works with passing time, but it has some differences. It don´t have to be positive, it is not always an advance but it can be negative or indeed don´t be neither positive or negative but neutral. I don´t think every creation development have an evolution, but I am sure that they have a process where the designer decide how to put the elements, how to think, etc.
Process is changing from what it is right now to something different in the next moment and it is in all the things in the universe since the existence of time.