what is seeding in laravel code example

Example 1: laravel run seed

#All of them
php artisan db:seed
#One class
php artisan db:seed --class=UserSeeder

Example 2: laravel make seeder

php artisan make:seeder NameOfTheSeeder

Example 3: laravel 8 seeding

php artisan db:seed

php artisan db:seed --class=UserSeeder