life story vs history

life story and history both are nouns.

Word	Noun	Adjective	Verb	Adverb
life story	Yes	No	No	No
history	Yes	No	No	No

As nouns, history is a hypernym of life story; that is, history is a word with a broader meaning than life story:

Other hypernyms of life story include account, chronicle, story.

life story (noun)	history (noun)
an account of the series of events making up a person's life	the discipline that records and interprets past events involving human beings
	all that is remembered of the past as preserved in writing; a body of knowledge
	a record or narrative description of past events
	the aggregate of past events
	the continuum of events occurring in succession leading from the past to the present and even into the future