What Is Their Main Difference?
Both 'nobody' and 'no one' are pronouns that are used to indicate that there is not a single person who fits a certain description or meets a certain criteria.
Both of these pronouns are used as negative indefinite pronouns that are used with singular verbs. Since they are already negative, no other negative words should be used in the sentence.
to help us.' or 'No one anything to help us')
The preposition 'of' should not be used after 'no one'. Instead, 'none of' should be used when referring to a group of three or more people, and 'neither of' should be used when referring to two people.
No one of her friends came to her party.")
no one of his parents can cook.")