somebody vs someone

somebody and someone both are nouns.

Word	Noun	Adjective	Verb	Adverb
somebody	Yes	No	No	No
someone	Yes	No	No	No

As nouns, somebody and someone are synonyms defined as:

somebody and someone: a human being; person, singular, assertive existential pronoun; pronoun, person, singular; quantifier: assertive existential

Other synonyms of somebody include individual, mortal, person, soul.

somebody (noun)	someone (noun)
a human being; person, singular, assertive existential pronoun; pronoun, person, singular; quantifier: assertive existential	a human being; person, singular, assertive existential pronoun; pronoun, person, singular; quantifier: assertive existential