Are two terms zone and domain different?

[AGupta]

Hi,

Most of the times, the server people used, the term zone interchangeably with the word domain, is there any distinction between these terms?

[Aleta]

Yes, that is true, that that technical people use the two terms interchangeably. But there is distinction between the two terms, often we use zone to refer to the domain database file, while the term domain is used
in more general contexts. A domain is part of the domain hierarchy identified by a domain name. A zone is a collection of domain information contained in a domain database file. The file that contains the domain information is called a zone file.