When identifying a place or geolocation, both postal code or zip code is used to give a unique identity to a particular area. Although they accomplish the same task in a similar way, the word Zip code ( Zone Improvement plan) is more commonly used in the United States in some european countries whilst the phrase Postal code is more commonly used in other nations.
There are a number of synonyms for postal code; some are country-specific.
CAP: The standard term in Italy; CAP is an acronym for codice di avviamento postale (postal expedition code).
CEP: The standard term in Brazil; CEP is an acronym for código de endereçamento postal (postal addressing code).
Eircode: The standard term in Ireland.
NPA in French-speaking Switzerland (numéro postal d'acheminement) and Italian-speaking Switzerland (numero postale di avviamento).
PIN: The standard term in India; PIN is an acronym for Postal Index Number. Sometimes called a PIN code.
PLZ: The standard term in Germany, Austria, German-speaking Switzerland and Liechtenstein; PLZ is an abbreviation of Postleitzahl (postal routing number).
Postal code: The general term is used in Canada.
Postcode: This solid compound is popular in many English-speaking countries and is also the standard term in the Netherlands.
Postal index: This term is used in Eastern European countries such as Ukraine, Moldova, Belarus etc.
PSČ: The standard term in Slovakia and Czech Republic; PSČ is an acronym for Poštové smerovacie číslo (in Slovak) or Poštovní směrovací číslo (in Czech), both meaning postal routing number.
ZIP code: The standard term in the United States and the Philippines; ZIP is an acronym for Zone Improvement Plan