not the same as another or each other; unlike in nature, form, or quality.
Derek Swan was different. He wasn't human, he wasn't a vampire. He was a Werewolf.
Alice Cullen was different. She wasn't human, she wasn't a werewolf. She was a vampire.
Moving to Forks was meant to be a new start for Derek, A way to stay out of the supernatural as much as he can. But he's thrown in deeper, discovering new supernatural creatures, discovering more about being a werewolf, discovering new love. All whilst trying to protect his sister, Bella, as she finds herself falling for a vampire.