What is the difference between connecting to WooCommerce REST API vs WordPress?

What is the difference between connecting to WooCommerce REST API and connecting to WordPress?

What is WooCommerce REST API?

 The WooCommerce REST API is an interface that you can use to access your WooCommerce store from outside WordPress. It was designed to make it easy for WooCommerce stores on WordPress to interact with other websites and applications over the Internet.


 Connecting with WordPress then WooCommerce DOES NOT have interactivity with other websites add apps