Difference options with the CREATE ROLE docs

The following documentation comment has been logged on the website:

Page: https://www.postgresql.org/docs/12/sql-creategroup.html
Description:

Hello,
This page says that "CREATE GROUP is now an alias for CREATE ROLE.",
But when u check the CREATE ROLE, u see they have different options,
I don't know if this is on purpose or not, But if it's just an alias, then
they should have the same options
If it's not the "exact same", then I guess there should be some explanations
about it
Thanks