All I found was this comment about the difference.
Premium domain is only available when you have premium, because fewer people pay and fewer people use it, so there is less abuse and the domain name has better reputation, so when you public domain is not working, using the premium domain may be able to register.-
Privacy has become a very important issue in modern society, with companies and governments constantly abusing their power, more and more people are waking up to the importance of digital privacy.
In this community everyone is welcome to post links and discuss topics related to privacy.
[Matrix/Element]Dead
much thanks to @gary_host_laptop for the logo design :)
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Premium domain is only available when you have premium, because fewer people pay and fewer people use it, so there is less abuse and the domain name has better reputation, so when you public domain is not working, using the premium domain may be able to register.-