I don't usually notice the vocabulary in the books I read. What I do notice is how well the writer uses the words they choose. Perhaps the constraints they are under inspire the best YA writers to use language with greater precision. In a book like A Wizard of Earthsea the language is very nearly poetry.
And not that the vocabulary in most books written for adults is particularly advanced. It's often at the 7th or 8th grade level so that readers don't feel like they're reading a textbook.
And not that the vocabulary in most books written for adults is particularly advanced. It's often at the 7th or 8th grade level so that readers don't feel like they're reading a textbook.