Account Holder : A person or company that is responsible for a domain name. If you register under a company, the company will be designated as the account holder .

Account Number : A reference number given to the account holder to identify its account as called account number.

Administrative Contact/Agent : When registering a domain name, the administrative contact must be provided to the registrar when completing the registration form. This is primary contact for responsible for act. The administrative contact does not necessarily need to be able to manage the technical aspects of the domain .

Auxiliary Domains : Domain names registered and utilized to compliment the primary domain. Often misspellings, mis-typing, company names, abbreviations etc .

Appraising: The process of evaluating a domain name and determining its market value .