Sound Design and Sound Editing
The title of Sound Designer is often used in place of Sound Editor, Sound Mixer and sometimes Supervising Sound Editor. With that said I prefer to use the term Sound Design to describe the personal style of each sound engineer who is responsible for most if not all of the post audio work for a particular project. My personal interest, taste and style, is for realistic and naturalistic sounds. That is why I am always out recording new ambiences and sound effects, and (when time allows) fresh sound effects for each independent film I post.