Four main ingredients needed to create a sentence

What is most likely nelson mandela's purpose of using third person point of view after introducing himself in his introductory paragraphs

Write an explanation for how to perform some kind of physical activity, such as riding a bike or playing a sport. the explanation should be geared toward someone who has never performed the activity. be sure to explain the steps in the process clearly, organize your ideas appropriately, use text features

Which pair of words has similar denotation but different connotations?