A text or part of a text that uses a structure of comparison and contrast examines the similarities and differences between two or more items, people, events, ideas, etc. In comparison , writers show how ideas, etc. are the same or similar, in contrast authors show the ways in which they are different from each other. Clues are given by signal words, that indicate that one thing is being compared to another, such as too , equally and just like , or contrasted to another, such as on the other hand , whereas and although .