how “manage_posts_custom_column” action hook relate to “manage_${post_type}_columns” filter hook?

add_filter("manage_{xxxx-xxx}_columns", "cusotm_callback_fun02" ); is used to add the column itself to the list of columns for that post_type. add_action("manage_posts_custom_column", "custom_callback_fun01"); adds the actual content of the column per post.