Bleed. The bleed is extra space around your page that is intentionally printed, then trimmed by the printer. The standard bleed size is 1/8 inch, and is usually used to allow for movement the paper during printing.
Candids. Candids are photos that are captured without posing your subjects or distracting them from what they’re doing. They’re great for capturing everyday aspects of school life.
Caption. A caption is a page element that explains the who, what, when, where, and why of a photo. Captions can also be used in the yearbook to tell readers something they would not otherwise know when looking at a photograph.
Copy. Copy is the content of an article or news element. (Basically, it’s the words used to tell a story.)
Copy Editing. Copy editing is work done to improve the format, style, and accuracy of a story. Though copy editing can involve correcting grammar and spelling, the primary reason to copy edit a story is to improve its clarity and ensure it aligns with a yearbook’s style.
Coverage. Coverage is what you plan to cover in your yearbook (events, topics, people, etc…)
Dominant Element. A dominant element is the element on a page that immediately attracts a reader’s attention.
Folio. Folio is page numbering that appears on the outside portion of pages, usually at the bottom. A folio may also contain the title of your yearbook or your section title.
Gutter. No, it’s not attached to your roof. And, no, you don’t have to keep your mind out of it. When it comes to yearbooks, a gutter is the space between two facing pages (an important place to keep clear, because, when a yearbook is bound, the space between the pages shrinks). It’s best to apply a 1/2 inch margin to both sides of the gutter, or 1 inch in total.
Headline. A headline is a line (or lines) of large type used to introduce the most important fact to the reader.
Ladder. A ladder is a chart that represents the pages in a yearbook. It can be helpful when planning section placement and page content.
Layout. A layout is a design plan for a page or spread in a yearbook. It accounts for the size and position of all elements on a page.
Lead (or Lede). The lead is the introductory portion of a news story; usually the first sentence or paragraph. It relays to the reader the most essential information. In traditional journalism, it is spelled “lede.”
Modules. A module, also called a “mod,” is, essentially, the yearbook equivalent of a sidebar. It is a smaller amount of text with accompanying photos that supports a page’s main story.
Portraits. Portraits are posed photographs of individuals. These photos are the photos that are usually being referred to when someone is talking about their “yearbook photo” or “school portrait.”
Proof. A proof is a copy of the yearbook’s final pages that are sent to the staff for a final review and approval.
Proofreading.Proofreading is used to catch any typos before sending a yearbook to print. It’s the last read of the yearbook and should be done on a printed proof.
Pull Quote. A pull quote is a phrase or quote pulled from a story and used as a graphic element. It highlights a key topic or point in a story and is usually placed in larger, more distinctive type.
Section Divider. The dividers are like“title pages” for every section of your book. For example, it could be a spread dedicated to introducing Student Life, or Sophomore portraits.
Spread. A spread refers to two pages that face each other in a yearbook.
Theme. A yearbook theme is an idea or concept that’s used to tie together the various sections and stories found throughout the yearbook.
Template. A template is a predesigned layout that helps maintain visual consistency throughout a book. Different sections may have different templates.
Info taken from this and this article, and edited by a super cool dude