domain

/dəʊˈmeɪn/noun

An area of activity, knowledge, or influence that belongs to a person or group.

Example sentence

“Cooking is entirely my husband's domain in our house.”

On the internet it is the address name after www, and 'public domain' means free of copyright. 'Outside my domain' disclaims expertise.

Related words

protocolAn agreed set of rules for sending and receiving data, especially between computers on a network.hyperlinkA piece of text or an image on a screen that you can click to open another page or start an action.firmwareSoftware stored permanently inside a device that controls its basic hardware functions.bookmarkA thin piece of paper, fabric, or other material placed between pages to keep your spot in a book.malwareComputer programs created to do harm or act against the user's wishes.cookieA small, flat, sweet baked treat that may be crunchy or soft.