What is the difference between a memoir, biography and an autobiography?

Question: What is the difference between a memoir, biography and an autobiography!?
Best Answer - Chosen by Asker:

a biography is when someone writes about anothe person's life!.

an autobiography is when someone writes about their own life!.

a memoir is a memory written outWww@QuestionHome@Com

Memoir is a brief recollection of a life event!.An auto-biography is a highly subjective,personalised account of one's life!.A biography is a third party,objective analysis of someones life!.
Memoirs are too superficial!.ABio is not the truth as it gives a glow to someone's story as it's them writing it!.
Biography is king as it's written by a 3rd party and is warts and all story,not just the good bitsWww@QuestionHome@Com

A story about ones experience, someone else's story and ones own self!.Www@QuestionHome@Com