The .bashrc file is a script that is executed whenever a new terminal session is started in interactive mode. It is just the shortcut to the commands allows the user to launch any command or group of commands.
Drupal Console is the new CLI for Drupal. Drupal Console is a tool to generate boilerplate code, interact and debug Drupal. From the ground up, it has been built to utilize the same modern PHP practices which were introduced in Drupal 8.