✅ The relationship between AUTHOR and BOOK is that an author creates a book; it's a 'creator : creation' relationship.

A composer creates a symphony, which perfectly mirrors this 'creator : creation' relationship.

❌ PAINTER : CANVAS represents a 'creator : medium' relationship, as a painter uses a canvas to create art, but the canvas itself is not the final complete artwork.

❌ READER : LIBRARY represents a 'user : place' relationship, where a reader utilizes a library.

❌ EDITOR : MANUSCRIPT represents a 'reviser : raw material' or 'professional : work-in-progress' relationship, as an editor refines a manuscript.