Nonfiction:
* Biographies/Autobiographies: Tell the stories of real people's lives.
* History: Cover events, people, and periods from the past.
* Science: Explore natural phenomena and scientific principles.
* Technology: Explain how things work and how technology is used.
* True Crime: Focus on real crimes and investigations.
* Social Sciences: Explore human behavior, societies, and cultures.
* Current Events/News: Report on contemporary happenings.
* Nature/Environment: Focus on the natural world and its inhabitants.
* Travel: Describe different places and cultures.
* Self-Help: Provide advice and guidance on various topics.
Informational:
* Textbooks: Provide information on specific subjects for educational purposes.
* Reference Books: Offer factual information in a concise format (e.g., dictionaries, encyclopedias).
* How-to Books: Provide instructions on specific skills or tasks.
Other:
* Memoirs: Personal accounts of significant events or experiences.
* Documentaries: Nonfiction films that present factual information.
Important Note: Even within these categories, there are different levels of "factuality." Some books strive for strict objectivity, while others offer more subjective perspectives or interpretations. It's always important to consider the author's biases and the sources they use.