What is the difference between UX testing and usability testing?

Question

What is the difference between UX testing and usability testing?

For example Wikipedia simply redirects "UX testing" to "Usability testing" (as of 2021-10-18)

While for example here there are claims that there are differences, but I am not too impressed by answer quality. Similarly say https://fuzzymath.com/blog/difference-between-usability-and-user-experience/

This page has https://ux.stackexchange.com/tags/usability-testing/info but no mention of UX testing there - and no equivalent UX testing tag

Answer 1

Usability testing is an observational methodology to test out products with users. UX Testing I believe encompasses all methods to test and measure the UX like: Usability studies, Card sorting, Heuristics etc.