What words are most commonly confused with one meaning for a different word?

I read amphetamine and thought it meant amphibian. We all make mistakes like this sometime especially if the brain hasn't thought you used those words in a while. Especially these 2 words that come from German or Greek and my mind is mostly on Japanese but those 2 words haven't been used by me in a long time so there may have been some confusion. I'm going to put this in Words and Wordplay now to see if it receives more answers this time.