Mathematical language is just not properly understood by many people. People might mistakenly use "monthly average" when they really want the 'average a month' but that doesn't change the meaning of those terms, equally as people creating about "stationery cars" does not change the meaning of "stationery" or "stationary". https://financefeeds.com/btc-news-bitcoin-solaris-launches-revolutionary-mobile-mining-app-that-could-turn-100-into-a-fortune/