Too Long; Didn't Read
Sadia Mehmood: "I think they are both the same thing, whereas a minor contribution is fairly through how the application that is in use is being architected by the backend" In real world scenarios, majority of the time, it is the UI and not the functionality that makes an application stand out. To say it in more simple words, an application with a bad functionality but a great UI has more chances of success, than a BAD UI and great functionality. So, I believe they are equally important.