Here's a really terrific guide to word usage that I think is fascinating. Don't be surprised if you find that you have made (or are making), some of these same mistakes. I know I have.
WARNING: Once you click on one word and explore, you'll want to keep clicking on one word after another. That could take all day! It's a very long list.
ATM machine
“ATM” means “Automated Teller Machine,” so if you say “ATM machine” you are really saying, “Automated Teller Machine Machine.”
Thanks given to Paul Brians for posting the lengthy list and sharing. Credit to Nancy P. McKee and George P. Kennedy, who wrote "Correcting Common Errors in Writing," published by Kendall/Hunt Publishing.