<span>The process that an author does to introduce the character in the story is called characterization. It is the revelation of the personality of the character.
Direct characterization is the way the author reveals how he/she wants the character to be portrayed, such as their traits in a direct and straightforward manner.</span>
To protect it's surroundings
Well although the two are very close in comparison, an autobiography is a book that the author writes about their whole lives and themselves while a memoir is only part of the author's life that he writes about. Hope that helps!