system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: If William Shakespeare's works contained 100s of words that he made-up, then how were they able to be understood?

Works with so many made-up had the potential to be dismissed as the ravings of a lunatic, but instead, his were seen as genius.  Why?
gpt
He didn't just create words out of thin air, he coined (or at least was the first to print) words based on existing words.

For example, he's credited with coining the word "bedroom."  It's pretty easy to understand what he meant by that since the words "bed" and "room" already existed.  Or the word "invulnerable" which was based on the already-existing "vulnerable."