Everybody and everyone are two very synonymous words that are commonly used in the English language, but most speakers really do not know if they're at all exists any difference between them. Most people do not even care to know the difference or differences. As I wrote earlier, these two words are synonymous, but still, they have a slight difference between them.
The word everybody, when used in a sentence, simply refers to all people. That simply means the word everybody refers to all in a group as an entity. On the other hand, the word everyone, when used in a sentence, simply means every person.
This implies that the word everyone refers to every person in a group as an individual. So, a synonymous phrase for everyone can be said to be "each one of you." Whereas the entire individual in the group follows an order of command or sentence required after the usage of everyone.