Two words are causing some confusion among the people I interact with:
Mines (noun, pl.) holes in the ground from whence come diamonds, coal, etc.
Mine (pronoun, possessive) an object belonging to me.
Wrong: "That dollar bill's mines."
Correct: "That dollar bill is mine."
Consider this a PSA.
I mean, really, who on earth does not know the difference between those words? WTF??? Are they trying to sound cool by sounding ignorant? We need to stop tolerating this. If everyone would correct the error, it would go away.