The higher the calories per gram, the higher the energy density. When you're trying to lose belly fat and overall body weight, it is best to choose foods that are low in energy density, according to the Centers for Disease Control and Prevention. Vegetables are the foods with the lowest energy density.
If something is so new and original that it's never been seen, used or even thought of before, call it novel. The noun novel describes a book-length work of fiction. New and novel come from the same Indo-European root but by different paths. Whereas new is a Germanic word coming from Old English, novel is based on Latin novellus new, young, fresh.. If something is novel, it is new but also original, fresh and unique.
A book can be anything ranging from non-fiction to fiction. A book is a broad term used to talk about any written work pertaining to the subjects studied by the students, a non-fiction work, a work of poetry, a novel, or a written work on any discipline for that matter. Moreover, a writer of books is simply called an author or a writer.