The Book and the Taxonomy modules are very similar for organising content in a hierarchy structure.
- Allow Multi level hierarchies
- Can be accessed by Views
- All custom theming via node.tpl.php files
- Offer the means for promoting or demoting content within a hierarchy, or moving it to another hierarchy
The Book module has the added advantage of creating navigation system (Although you could probably recreate this with taxonomy and Views).
My question is this: Which is the better to use for organising content in a hierarchical structure? Does one have any disadvantages or advantages over the other?
It seems odd to me that two similar modules exist in core. Why aren't they just combined into one?