Is there a difference between a pornographic novel and an erotic novel?

I am thinking mainly of the Sleeping Beauty novels by Anne Rice. I, personally didn't find them erotic or pornographic and thought scenes could have been developed a lot better with more detail. It's almost like she had to pick and choose how many euphemisms and explicit descriptions she could use. It certainly didn't read like a page out of Penthouse Letters like I'd hoped.

Is this an industry chokehold or an author choice? less