Copywriting focuses, by and large, on selling something using persuasive or clever copy. And though UX writing often requires sales and marketing language, the majority of the copy in an interface or website needs to instruct or inform the user, not sell them something — two very different styles of writing.
UX writers who often need to bridge the gap with stakeholders, marketing team members, and many others. Good communication skills are a must for all UXers out there — writers and designers alike.
UX writers are product designers too
UX writing is an exciting and relatively new field. You can’t learn it at most universities, and there aren’t too many courses teaching it, but the demand for it is exploding these days.