what does comopser need to make a new project in laravel code example

Example 1: laravel create project

// To install and use a specific version, you can enter it at the end of the command.
// For example using version 5.8 ==>
composer create-project --prefer-dist laravel/laravel projectName "5.8.*"

Example 2: laravel new project

composer create-project --prefer-dist laravel/laravel blog