Simply put, it is an essay evaluating the similarities and differences between two subjects.
These subjects will be in the same category, but different.
(Men usually have superior physical strength and technical skills).
You can also go point by point throughout the essay.
Remember to keep characteristics of the different subjects somewhat parallel.
This will make it easier to structure a good argument.
Craft an outline that fits the structure you have chosen.
Traditionally, an essay consists of an introductory paragraph, three body paragraphs, and a conclusion.
If you are comparing and contrasting cats and dogs, use personal anecdotes about friends and their pets to bolster your arguments.
(“My roommate’s dog always greets him when he comes home each day, but my cat never does.”) If you are writing about similarities and differences between the poetry of Shakespeare and Keats, include plenty of quotes from their poems to support your statements.