domain

A named part of the internet that groups related website addresses, such as example.com.

• We registered a new domain.
• Is that domain name still available?
• All company email addresses use the same domain.

Similar words: domain name

Common phrases: domain name, register a domain, email domain

An area of knowledge, work, or responsibility, or one where particular rules apply.

• This question is outside my domain.
• The study falls within the domain of social science.
• Legal matters are the lawyer's domain.

How to use it: the domain of someone/something (These questions belong to the domain of philosophy.); within/outside someone's domain (That decision is outside my domain.)

Similar words: field, area, sphere

Common phrases: domain of science, within someone's domain, outside someone's domain, someone's domain

An area of land owned or controlled by a person or organization.

• The king ruled a vast domain.
• These forests once formed part of the royal domain.
• The river marked the edge of his domain.

Similar words: territory, lands, realm

Common phrases: royal domain, someone's domain, rule a domain