creature vs somebody

creature and somebody both are nouns.

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

As nouns, somebody is a hypernym of creature; that is, somebody is a word with a broader meaning than creature:

creature: a living being
somebody: a human being; person, singular, assertive existential pronoun; pronoun, person, singular; quantifier: assertive existential

Other hypernyms of creature include individual, mortal, person, someone, soul.

creature (noun)	somebody (noun)
a living organism characterized by voluntary movement	a human being; person, singular, assertive existential pronoun; pronoun, person, singular; quantifier: assertive existential
a living being
a person who is controlled by others and is used to perform unpleasant or dishonest tasks for someone else