Nonfiction and Textbook

Nonfiction noun - Prose writing that is not fictional.

Textbook and nonfiction are semantically related. in published document topic. In some cases you can use "Textbook" instead a noun "Nonfiction".

Textbook noun - A book used for instruction in a subject.

Nonfiction and textbook are semantically related. Sometimes you can use "Nonfiction" instead a noun "Textbook".