Mathematical language is not very well understood by many people. People might mistakenly use "regular average" when they really want the 'average every month' but that doesn't change the meaning of those phrases, equally as people creating about "stationery autos" does not change the meaning of "stationery" or "stationary". https://financefeeds.com/nuclear-tensions-ignite-brink-of-global-turmoil-as-new-digital-icon-quietly-emerges-to-save-market/