biography vs life history

biography and life history both are nouns.

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

As nouns, biography and life history are synonyms defined as:

biography and life history: an account of the series of events making up a person's life

Other synonyms of biography include life, life story.

biography (noun)	life history (noun)
an account of the series of events making up a person's life	the general progression of your working or professional life
	an account of the series of events making up a person's life