User Friendly
User Friendly refers to websites and applications that are user-friendly and designed in a clear and logical manner, so that the user has no problem finding their way around.
USP – Unique Selling Proposition
It expresses what a given company or entrepreneur can bring to its customers, how its service or product stands out from the competition, what can be a reason for customers to buy from it or use its services. Typically, this can be a tailor-made solution in cases where the service is not offered by competitors.
UX – User Experience
UX stands for "user experience" or user experience. You can recognize a website with a well-designed UX at a glance. It's completely intuitive to use and you won't encounter any problems and it's simply very easy to use. UX can apply to products other than just web products.
UI – User Interface
UI stands for "user interface" or user interface. It refers to the look and feel of a website and the individual elements that you, as a user, come into contact with on websites and in applications. The UI includes everything you see and work with on websites and apps.