Moving one WordPress site to another WordPress site domain
This is very likely a stupid question, so please forgive me. I’m new to this.
I now want to replace www.AAA.wordpress.com and with www.BBB.wordpress.com — in other words, I want to change the domain name of www.BBB.wordpress.com with www.AAA.wordpress.com. (and then there will no longer by any need for www.BBB.wordpress.com, so can be deleted). It sounds simple, but it’s the kind of thing I don’t know how to google.
Is this possible (without much technical knowledge)?