Here are some common professional English terms related to hardcover books:
Hardcover: A book with a stiff cover made of thick cardboard wrapped in cloth or paper.
Dust jacket: A detachable protective covering usually made of paper that wraps around the outside of a hardcover book.
Spine: The narrow edge of a book where the pages are bound together.
Title page: The page at the beginning of a book that displays the title, author's name, publisher, and sometimes additional information like edition and copyright date.
Endpapers: The double-sided sheets glued to the inside of a hardcover book cover, usually made of decorative paper.
ISBN: International Standard Book Number, a unique numerical identifier assigned to each book edition.
Colophon: A brief statement located at the end of a book that provides information about its production, such as the printer, typeface, and paper used.
Gilding: The process of applying a thin layer of gold or metallic foil to the edges of the book pages or to decorative elements on the cover.
Bookbinding: The art or process of physically assembling a book by attaching the pages to a cover or spine.
Half-title page: A page located just before the title page, which displays only the title of the book.
Embossing: A technique used to create raised or depressed designs on the cover or spine of a hardcover book.
Headband: A decorative band made of silk or cotton thread attached to the top and bottom of the book's spine.
Ribbon bookmark: A thin ribbon or strip of fabric attached to the spine or cover of a hardcover book, used for marking the reader's place.
Blind stamping: Also known as blind embossing, it refers to creating a design or pattern on the cover or spine of a book using heat and pressure without adding color.
Hinge: The part of the bookbinding where the cover is attached to the spine.
These are just a few examples of professional English terms related to hardcover books. Please let me know if you need any further assistance.