A player load is when a page with a player is loaded on a device. An example of this would be when you send a GoVideo or sharing page URL to someone and they open up your page which contains a player.
Another situation might be where there are multiple in-line players embedded on a page. In this case, each time that page is loaded by a user, each player on that page will also be loaded. This is not the same as video views because the players that loaded on a page do not necessarily have to be clicked on (played /viewed).
Video plays/views depend entirely on whether or not the user decides to click on the loaded player to actually play the video. There will not be a viewing session until the user has clicked play.
A player that has been loaded once can be clicked on to play and then replayed over and over again, this would result in one player load and multiple video plays (views).