Good question that I got from a friend of mine and I hade to think about it. And yes in my opinion there is a difference. To me a picture is something that can be created using a variety of tools as well as combining different photos. While a photo in my opinion is captured and showing what was happening at the very moment when I pushed the trigger, what do you think.
This is a picture created by using two photos, would you consider this a photograph? Please share your opinion.