You know that feeling when you're trying to write a paper but you just can't think of the right word? Well, good ole' Willy had a very simple solution to this problem. Just invent a new word! Shakespeare coined many of the words we use in every day language. Words that seem common to us, like "luggage," "rant," "torture," and "bump," either did not exist or held a different meaning prior to Shakespeare's use of them. Below is a link with more examples of words coined by Shakespeare.
In addition to individual words, a great many modern cliches have Shakespearean origins. "Truth will out," "too much of a good thing," "up in arms," and "vanish into thin air" are just a few.
My favourite example of Shakespearean vocabulary is his invention of the poison used to kill Hamlet's father. "Hebona," or "hebenon"as it is spelled in the Folios, is not a real toxin or plant. There is no record of the word prior to its use in Hamlet. Further, there is no known poison that would cause the exact symptoms described in the play, namely curdling the blood and bark-like scabbing over the whole body. Possible candidates include yew, hemlock, henbane, and guaiacum. However, none of these could account for all of the named symptoms. This plant doesn't exist.
Good job, Shakespeare. You broke science.