Your bellybutton is your navel, and navel oranges look like they have one; all terms having to do with ships and sailing require “naval.”
This is the ten-year anniversary of the Common Errors in English Usage calendar. To celebrate, we are bringing back some of our favorite interesting, funny, but sometimes merely silly entries through the years before going on hiatus in 2016.
Enjoy the calendar? Buy the book! (http://tinyurl.com/commonerrorsbook)