Pleonasm is one of the "hardest" words I know. I learnt it when I lived in France as a french word and then I took for granted that it was called the same in English. I couldn't find the word in the dictionary until today:
pleonasm \PLEE-uh-naz-uhm\, noun:
1. The use of more words than are necessary to express an idea; as, "I saw it with my own eyes."
2. An instance or example of pleonasm.
3. A superfluous word or expression.
So it does exist in English. Cool. Remember the word now :)