WHAT IS AN ESSENTIAL OR SHOWCASE BOOK??

"Essential" and "Showcase" are terms often associated with collections of comic book stories, particularly from major comic book publishers like Marvel and DC Comics.

1. **Essential:**
   - **Marvel Comics:** The term "Essential" is primarily associated with Marvel Comics. "Essential" collections are typically black-and-white reprint volumes that compile key and iconic stories from a particular character or series. These collections are a cost-effective way for readers to access a large number of classic stories in a single volume.

2. **Showcase:**
   - **DC Comics:** The term "Showcase" is mainly associated with DC Comics. "Showcase" was originally a title used for a series that introduced new characters or concepts to readers. However, in the context of collections, the term is often used to refer to volumes that collect early stories of a particular character or team. These collections may showcase the character's initial appearances or early adventures.

In both cases, these collections serve as a way for new readers to explore the rich history of comic book characters and series without having to track down individual, often rare, comic book issues. They are also popular among collectors who want a convenient way to revisit classic stories.