Differences between hook_boot() and hook_init() in Drupal?

1. hook_boot() is called before modules or most include files are loaded into memory (1.e., This hook will called while Drupal is still in bootstrap mode).
2. hook_init()  is called After all modules are loaded into memory.

1. hook_boot() is called event though the pages / Views got cached.
2. hook_init() will not run on cached Pages.