AskMen has a pretty nifty post about the 5 things you didn't know about Shakespeare. Take, for instance, the word "torture" - yep, good ol' Will invented it (well, technically he made the noun "torture" which existed at the time into the verb form):
3- Shakespeare invented "torture"
Shakespeare didn't just invent "torture," but also "excitement," "addiction" and "savagery." Another of the five things you might not have known about Shakespeare is just how much he's influenced the English language. Our man Will invented about 1,700 words in the English language. A remarkable number of the phrases and words we use every day first appeared in Shakespeare's work. Shakespeare converted verbs into adjectives or nouns into verbs whenever it suited him. Amazingly, his linguistic inventions stuck, and we still use them today.
The same apply for the other words in the list, so i don't see how he invented those words, he just transposed them from French to English language.
"More than a third of all English words are derived directly or indirectly from French, and it's estimated that English speakers who have never studied French already know 15,000 French words."
http://french.about.com/library/bl-frenchinenglish.htm
Shakespeare was Shakespeare was Shakespeare. However, a lot of words were falsely attributed to him because the people scraping the dictionary together would ascribe the words to him. "Look, it's in Shakespeare" they'd say, and bung it in.
http://www.sharingmachine.com/index.php?item=29
Said more about them than me IMO.
The mistake comes because proper dictionaries, like the OED, have to have a citation -- an example of the first time that word, used in that way, is known to have been used.
Shakespeare is a famous writer whose plays have survived better and are better known than most of the other writers from his time.
So when they go looking for a citation, often Shakespeare is where they find the earliest example. So he has a lot of citations to his name. But he didn't make up the words.