Example: "She was as graceful as a swan."
Metaphor: A comparison of two things that are not directly alike, but have similar characteristics.
Example: "He was a lion in battle."
Personification: Giving human characteristics to an animal, object, or idea.
Example: "The wind whispered through the trees."
Allusion: A reference to a well-known person, place, or event.
Example: "He was a modern-day Don Quixote, tilting at windmills."
Hyperbole: An exaggeration that is not meant to be taken literally.
Example: "I was so hungry I could eat a horse."