offspring vs creature

offspring and creature both are nouns.

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

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

Other hypernyms of offspring include animal, animate being, beast, brute, fauna.

offspring (noun)	creature (noun)
any immature animal	a living organism characterized by voluntary movement
something that comes into existence as a result	a living being
the immediate descendants of a person	a person who is controlled by others and is used to perform unpleasant or dishonest tasks for someone else