Final answer:
A simile is a comparison between two unlike things using like or as.
Step-by-step explanation:
A comparison between two unlike things using like or as is called a simile. In a simile, the writer or speaker directly compares two things using the words 'like' or 'as'.
For example, 'She runs as fast as a cheetah' is a simile. The speed of the person running is being compared to the speed of a cheetah using the word 'as'.
Similes are often used in literature to create vivid imagery and make descriptions more engaging.
Learn more about Simile