Individual
Part of speech: adjective
Definition: Relating to a single person or thing as opposed to more than one. Intended for a single person as opposed to more than one person.
Part of speech: noun
Definition: A person considered alone, rather than as belonging to a group of people. An object, be it a thing or an agent, as contrasted to a class.
Example sentence: Don't marry the person you think you can live with; marry only the individual you think you can't live without.
Somebody
Part of speech: pronoun
Definition: Some unspecified person.
Part of speech: noun
Definition: A recognised person, a celebrity.
Example sentence: Everything is funny, as long as it's happening to somebody else.