"Non-fiction (or nonfiction) is any document or media content that attempts, in good faith, to convey information only about the real world, rather than being grounded in imagination."
Any work of narrative prose dealing with or offering opinions or conjectures upon facts and reality, including biography, history and the essay.
"The main genres of non-fiction are instructional, explanatory, discussion-based, report-based (non-chronological), opinion-based (persuasive) and relating (chronological recounting) non-fiction."
"Reference works (almanacs, encyclopedias, atlases, bibliographies, chronicles, consumer reports, dictionaries, thesauri, business or telephone directories, handbooks, yearbooks, books of quotations, etc.)"
"Life writings (autobiographies, biographies, confessions, diaries, logs, memoirs, epistles, letters, postcards and letter collections, epitaphs, obituaries, etc.)"
"Persuasive writing (apologias and polemics)"
"Academic texts (scholarly papers including scientific papers, monographs, scientific journals, treatises, edited volumes, conference proceedings, etc.)"
"Promotional writing (brochures, pamphlets, press releases, advertorials, etc.)"
"Non-fiction formats such as reference works, life writings, literary criticism, art criticism, promotional writing, persuasive writing, essays and essay collections, history books, academic texts, news stories, editorials, letters to the editor, and opinion pieces, manifestos, notices, documentary films, textbooks, study guides, field guides, travelogues, recipes, owner's manuals and user guides, self-help books, popular science books, blogs, presentations, orations, sayings, etc."
"They can use graphic, structural and printed appearance features such as pictures, graphs or charts, diagrams, flowcharts, summaries, glossaries, sidebars, timelines, table of contents, headings, subheadings, bolded or italicised words, footnotes, maps, indices, labels, captions, etc. to help readers find information."
"Non-fiction is a fundamental approach to narrative (storytelling), and often refers specifically to prose writing – in contrast to narrative fiction, which is largely populated by imaginary characters and events."
"The sincere author aims to be truthful at the time of composition."
"Non-fiction writers can show the reasons and consequences of events, they can compare, contrast, classify, categorize and summarize information, put the facts in a logical or chronological order, infer and reach conclusions about facts, etc."
"A non-fiction account is an exercise in accurately representing a topic."
"While specific claims in a non-fiction work may prove inaccurate..."
"A non-fiction account [...] remains distinct from any implied endorsement."