So, I don’t know what kind of nerd you are, but my brand of nerdiness dovetails neatly with this video about the origins of some of the most common symbols on your keyboard: #, @, &, §, *, ¶, †, and ‡, as well as ☞.
The “and” symbol or ampersand does not look like a word, but it is one. In fact, it is a full one. It is the Latin word for “and”: “et”. The Romans themselves used this. How do we know? Because we have this: the earliest known example of it, graffitied onto a wall in the doomed Roman city of Pompeii.