Post-code is an alphanumeric code that is used by postal services to sort and deliver mail. Although post-code is the most commonly used term, there are many other synonyms for this word depending on the country or region. In the United States, post-codes are commonly referred to as zip codes, while in Canada, they are referred to as postal codes or PSC. Other synonyms include PIN code in India, CAP in Italy, and postcode in the United Kingdom. No matter what you call it, the post-code system plays a crucial role in the delivery of mail and parcels, helping to ensure that they reach their destinations quickly and efficiently.