PB-- Picture Book. Heavily illustrated story about 32 pages long. The pictures are as important as the words. They contain few words. Examples: Caillou series by Christine L'Heureux or The very Hungry Caterpillar by Eric Carle.
EZ or ER-- Easy Reader. Books for kids who are learning to read. They have levels of difficulty. They usually are 1,000 to 2,500 words long or between 48-64 pages. They have illustrations with chapters. Examples: The Cat in the Hat by Dr. Seuss or Boxcar Children series by Gertrude Chandler Warner.
CB-- Chapter Book. They are destined for intermediate readers, 7-10. The chapters are short. Examples: Magic Tree House series by Mary Pope Osborne and Pippi Longstocking by Astrid Lindgren.
Hi-Lo-- High Interest, Low Reading Level. Intended for older children who read below their grade level but still want to read about themes that correspond to their level of maturity. Example: The Invention of Hugo Cabret by Brian Selznick.
MG-- Middle Grade. Intended for independent readers, from age 9-12 (even to age 14). Older elementary into middle school (and even early High School), grades 4 through 7 (even to 9th grade). They usually do not have pictures. The chapters are between 7-10 page long. Stories are between 80 and 192 pages long with a maximum of 45,000 words. Examples: Little House on the Prairie series by Laura Ingalls Wilder or The Indian in the Cupboard by Lynne Reid Banks.
YA-- Young Adult. Intended for kids 12-16 (teenagers). High school to adult (50% of readers are adults), grades 7 through 12. The chapters are longer and the plot more complicated with subplots and edgy subjects treated with sensitivity. The characters are teenagers with teen problems. Examples: The Giver by Lois Lowry, The Hunger Games by Suzanne Collins or Twilight by Stephenie Meyer or Farenheit 451 by Ray Bradbury.
ARC-- Advanced Reader Copy. It is a copy of the galley of the book before it gets published. Some authors offer free ARC for publicity. They send them to reviewers and buyers from large chains.
NF-- Non-fiction. Real subjects. Books that deal with how to make things and subjects in real life, not stories (as in fiction).
NIV-- Novel in verse. It is a novel made with poems. They are edgy, intensely emotional and make use of the white space. They attract teens. Examples: Psyche in a Dress by Francesca Lia Block or Reaching for Sun by Tracie Vaughn Zimmer or Out of the Dust by Karen Hesse.
SF/F – Science Fiction / Fantasy.
FF-- Fanfiction. It is a story written by a fan and featuring a favorite TV series, movie or book characters. Example: Fifty Shades of Grey by E.L. James, an erotic version of Stephanie Meyer's Twilight series.
RPF or RPS-- Real Person Fiction or Slash Fiction. Features fan fiction with sexual relationship between characters of the same sex.
Flash Fiction: Fiction stories that are very brief, between 100 words and 1,000 words. It describes a flash into a situation. There is no external conflict. It presents one character, one conflict, and one resolution.
Short story: A story told in 3,500 - 7,500 Words. It tells about a single event. It is a flash on the characters’ life, a peep into their life story. It tells a complete story between characters with an introduction, a conflict and a resolution with a character well developed.
Novelette: Fiction that is between 7,500 and 17,500 words.
Novella: It is a short novel or a long short story. It is told in one hundred pages. It is between 17,000 and 40,000 words.
Novel: It is a story told in 40,000 minimum. It includes plot twists and subplots.
Mainstream: Novel that sells well in all circles and breaks many conventions and in which ordinary people recognize themselves.
Literary: Character-driven stories with subtle plots and less fast-paced. They study the psychology of characters, introduce philosophical concepts portraying some aspect of the human condition and is well-crafted.
Genre fiction: It is a novel that follows the "conventions" of the genre it represents: mystery, fantasy, horror, adventure, science fiction, western, children's fictions. It is commercial and less crafted than the literary fiction with fast-paced situations. The plot is emphasized to entertain.
Urban: Or street literature. The action happens in a city and reveals a hidden world, a sub-culture.
Contemporary: Stories happening in the present day. They treat contemporary subjects in order to wake up communities.
Juvenile: Stories for young audiences, safe to read for young readers. It is for age 6-10.
Cross-genre: Also called hybrid-genre, is a novel that blends conventions from different genres. For instance, action-comedy or dark-fantasy or supernatural drama.
SQ -- Status Query
WIP-- Work In Progress
WT-- Working Title. The temporary name for a project.
MS-- Manuscript (mss=manuscripts).
Beta (reader): Person who volunteers to read a non-published novel.
CP-- Critique Partner. An author who accepts to swap manuscripts with another author with the goal of helping each other improve.
Spoiler-- Stories or comments showing scenes from the future novel or revealing crucial information about the plot of a novel or revealing major character developments.
Stand Alone novel: A novel that can be read and understood fully without having to read the sequel.
Query: Letter sent to an agent with the hope he or she will represent you.
Partial: After reading your query, an agent wants to read more of your novel and ask for a partial. It usually includes the first 50 pages of an unpublished manuscript.
Blurb: A short introduction to a novel authors put on their website or on the back cover of a book.
Full: An agent likes your query and your partial, she now request a full, which means the full manuscript along with credentials from the author and the author's plan for marketing the novel.
Glossary of Publishing Industry Jargon by Timothy Fish.