A DNS Registrar is authorized by ICANN to sell domain names. They essentially do the admin work required for the Domain Name System. Registrars have become important because they are private companies and they have started to become more political in their policies for maintaining clients for DNS services.
Domain Forwarding allows you to redirect web traffic from your domain name to another URL.
Doxxing is when personal information is released about people online. More than the act of doxxing itself, the more damaging component is the call to actions that accompany doxxing.