There is no difference in meaning between everyone and everybody, but everyone is more common in written English, and everybody is more common in spoken English.
Here's five minutes of gameplay from Everybody's Gone to the Rapture. There is some story here, but this is earlier on in the game and should not be a major spoiler for anyone interested in playing.
The meaning of EVERYONE is every person : everybody. How to use everyone in a sentence.
(Definition of everyone from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
You use everyone to refer to all people. Everyone feels like a failure at times. Everyone needs some free time for rest and relaxation.
However, similar to what occurs with collective or group nouns like crowd or team, sometimes a plural pronoun refers back to everyone which is also reflected in verb conjugations: Everyone was laughing at first, but then they all stopped.
Care should be taken to distinguish between everyone as a single word and every one as two words, the latter form correctly being used to refer to each individual person or thing in a particular group: every one of them is wrong
EVERYONE definition: every person; everybody. See examples of everyone used in a sentence.
Definition of everyone pronoun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.
Everyone refers to every person or every individual within a group or population. It is an inclusive term that encompasses all individuals regardless of their characteristics, attributes, or backgrounds.