Most writers mix the two, which is one of my pet peeves. Here's a (non-extensive) list of which is which: http://www.vanessafinaughtybooks.co.za/index.php?option=com_kunena&func=view&catid=9&id=31&Itemid=172&lang=en
You must stay drunk on writing so reality cannot destroy you - Ray Bradbury.
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Find me on Smashwords: www.smashwords.com/profile/view/VanessaFinaughty
Hire me as your editor: www.write-way-freelancers.com