autobiography vs life history

autobiography and life history both are nouns.

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

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

Other hypernyms of autobiography include biography, life, life story.

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