If college teaches you nothing else, try and remember words like metonymy.
They may not come in handy all too often, but eventually you will see: In eighty years, when aliens attack that look like little Mr. Potato heads, and someone shouts “Its one hundred heads against five of us!”, you’ll laugh. With your last dying breath, a whisper will escape: “That used to be: metonymy!” . No one else will know the word, because words are useless when thoughts are beamed directly. There will be no one to share it with, to say you’ve done correctly, but no matter. It will be a good laugh exchanged for the world entire, when humanity could go no higher.