history vs life history

history and life history both are nouns.

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

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

history (noun)	life history (noun)
the discipline that records and interprets past events involving human beings	the general progression of your working or professional life
all that is remembered of the past as preserved in writing; a body of knowledge	an account of the series of events making up a person's life
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