With so many genres combining elements, it's getting a little crazy out there folks. Trying to identify your book in a cover letter is like Russian roulette with all the chambers loaded. Most agents say we always get it wrong anyway.
So here are some definitions I've found in various locations. Opinions vary, but hopefully these can give you a general idea.
- Check out these general genre definitions from the editor's blog at the Novel and Short Story Market.
- Look at the Romance Writers of America website for a breakdown of the different romance genres.
- Check out Writing-World.com for a list of science fiction sub-genres.