Windows 11 calls a zip file a 'postcode file' in UK English
I remember reading an interview with a British author, it might have been Neil Gaiman. He was just about to get his first book published in the US, and the American publisher contacted him and asked if it was OK if they changed a couple of British words to American, like "flat" to "apartment". Not wanting to risk the publishing deal, they said sure.  A couple of month later they got the first edition of the US version back and found lines like."He looked out over the apartment landscape"and"'Come with me', he said apartmently"