There are a lot of books with The Magician(s) or just Magician as a title. And it is hard to trademark a title of this type, since it is just descriptive. read more
A chapter title, divorced of a book, is not really protected by copyright. There are certainly exceptions, such as using a character's name or a book-specific imaginary location, but most titles are descriptive and come up in normal writing. read more
a children’s book created by a writer and illustrator in collaboration with each other a textbook • A single contribution to a collective work Contribution to a Collective Work A contribution to a collective work is a separate and independent work that is included within a collective work. read more