"In copyright law, there are a lot of different types of works, including paintings, photographs, illustrations, musical compositions, sound recordings, computer programs, books, poems, blog posts, movies, architectural works, plays, and so much more!" - What is Copyright? (Copyright.gov)
FIXED - Fixed in a tangible medium, like a piece of paper or video recording: an idea alone cannot be copyrighted.
ORIGINAL - It is not necessary for a work to be completely original. Existing works may be combined, adapted, or transformed in new ways that make them eligible for copyright protection.
MINIMALLY CREATIVE - Only a slight degree of creativity is all that is required to be eligible for protection.
Forms, Facts, Names, Slogans, Words, Ideas, plus certain types of works: