Change Admin Menu For Blog Posts

macg_change_post_label

// Change Admin Menu For Blog Posts
function macg_change_post_label() {
	global $menu;
	global $submenu;
	$menu[5][0] = 'Blogs';
	$submenu['edit.php'][5][0] = 'Blogs';
	$submenu['edit.php'][10][0] = 'Add Blogs';
	$submenu['edit.php'][16][0] = 'Blogs Tags';
}
function macg_change_post_object() {
	global $wp_post_types;
	$labels = &$wp_post_types['post']->labels;
	$labels->name = 'Blogs';
	$labels->singular_name = 'Blogs';
	$labels->add_new = 'Add Blogs';
	$labels->add_new_item = 'Add Blogs';
	$labels->edit_item = 'Edit Blogs';
	$labels->new_item = 'Blogs';
	$labels->view_item = 'View Blogs';
	$labels->search_items = 'Search Blogs';
	$labels->not_found = 'No Blogs found';
	$labels->not_found_in_trash = 'No Blogs found in Trash';
	$labels->all_items = 'All Blogs';
	$labels->menu_name = 'Blogs';
	$labels->name_admin_bar = 'Blogs';
}
add_action( 'admin_menu', 'macg_change_post_label' );
add_action( 'init', 'macg_change_post_object' );
// END Change Admin Menu For Blog Posts

Add this to your themes functions.php file