What is the difference between a Facebook moderator and a Facebook administrator?

[Jacob]

Recently, my "cousin" got on Facebook and created a group in which he named 'Moderators on Facebook.' He invited several of his friends to this group and he is the owner of it, he claims that him and everyone in the group is a moderator in which they aren't really. However, luckily for him the group is secret, I removed myself from it. This is how his 'moderating works', his job is to keep the balance of Facebook flowing. For example, if anyone is breaking the rules and he sees it, he will tell the person to mail him with a link to the person's profile (The person they are reporting to him, and what they had done wrong. He then checks to see if the person is guilty or not and if they are, he spreads the word to his group and also leaves the link to the person's profile. Then his 'moderating group' reports that person all at once, and Facebook will ban the person seeing as how reliability counts on the number of people accusing of one individual. I am not saying that is how Facebook works but that is how my cousin thinks it works. One of my friends in his group messaged me saying he is joking around and Facebook won't really ban him seeing as how they haven't caught him yet. But what is the difference between a moderator and an administrator?