ZIP plus four and Zip code

Zip code and ZIP plus four are semantically related in numerical identifier for address topic. In some cases you can use "Zip code" instead a noun phrase "ZIP plus four".

Zip code noun - A code of letters and digits added to a postal address to aid in the sorting of mail.

ZIP plus four and zip code are semantically related in address identifier topic. You can use "ZIP plus four" instead a noun phrase "Zip code".