story vs biography

story and biography both are nouns.

Word	Noun	Adjective	Verb	Adverb
story	Yes	No	No	No
biography	Yes	No	No	No

As nouns, biography is a hyponym of story; that is, biography is a word with a more specific, narrower meaning than story:

story (noun)	biography (noun)
a structure consisting of a room or set of rooms at a single position along a vertical scale	an account of the series of events making up a person's life
a piece of fiction that narrates a chain of related events
a short account of the news
a trivial lie
a message that tells the particulars of an act or occurrence or course of events; presented in writing or drama or cinema or as a radio or television program
a record or narrative description of past events