The term "telephone number" has various synonyms that are widely used in different English speaking regions globally. In the United Kingdom, the term "phone number" is commonly used to refer to a telephone number. In North America, "telephony digits" is another phrase that can be used synonymously with "telephone number." In Australia and New Zealand, the expression "contact number" is frequently employed. Another synonym for "telephone number" that is increasingly used is "cell phone number" or "mobile number," particularly in reference to mobile phones. In summary, though each region may use different phrases, each term has the same meaning, and they can be used interchangeably.