What is the difference between wordpress and wordpressdirect?

Kindly elaborate further about the difference of wordpress and wordpressdirect?

• wordpress
• wordpressdirect
• WPD

switching between Wordpressdirect and wordpress

Hello! I am curently doing the 30 day challenge and have installed Wordpressdirect on my computer. I have also installed Wordpress as I find the dashboard easier to use. The problem is that I can no longer access Worpress, only Wordpressdirect.

• wordpress
• wordpressdirect