Bad UI Good UX

Fun fact : a website can have a bad ui but not necessarily a bad ux

A website that has a bad ui but still delivers its purpose, fast and reliable is said to be website with bad ui but good ux. Take Amazon for example, the Amazon website has what we will call an unpleasant ui but still the ui doesn't affect its user experience.

Another example is the calculator on your phone, the ui isn't something you'd call up-to-standards but still it delivers its sole purpose, reddit and so on.