Que Es Un "Memoir"

The official deffinition of a memoir is a written work that recollects something important about the author's life. funny thing about this is that its not really like an autobiography. The difference between both are as follows:
-An autobiography is detail of a person's life from beginning to end.
-A memoir are just speciefic details of one life. Memoirs are written to capture significant moments in the writer's past experiences.
I haven't read any recent memiors but I feel that maybe there will be some good ones that I Can enjoy. I guess in a way our first assignment in class was like a memoir. we were able to recollect information about our favorite place. maybe, maybe not.