What is the difference between `save_post` and `wp_insert_post` action hooks?

Question

WordPress Expert — Medium

What is the difference between `save_post` and `wp_insert_post` action hooks?

Accepted Answer

The main difference between `save_post` and `wp_insert_post` action hooks is that `save_post` fires on both inserts and updates of any post type after saving, while `wp_insert_post` only fires on initial post creation and provides the WP_Post object as the second parameter.