Oh, there are so many I could list but this is the one that has jumped out at me today.*
When you have something to sell you say "I need to sell this item" not "I need to sale this item"
A sale is something you go to or have. But you sell your goods.
*I am by no means the language police, I am sure I say things or write things that bug other people. This just happens to be something that bugs me.