What Means Novel Novels & Stories

It was indeed a novel! 'But how could she guess that the book was a novel?' Naomi thought. She took a step to distance herself from the shelf where Lisa picked the book and looked up. Instantly, her amusement vanished. There was a sign that was hanged. On it was a five-lettered word: NOVEL! Actually, all of the bookshelves in the library had a sign hanging above them, classifying what kind of books were in each bookshelves. It was just that Naomi hadn't noticed them.