Simile
A figure of speech that makes a comparison between two unlike things and uses the words "like," "as," "than," or "resembles."
Example From Text
Spring came on once more, and at the end of all their wandering they found, not the Lost Cabin, but a shallow placer in a broad valley where the gold showed like yellow butter across the bottom of the washing pan.
Explanation
Here, the author compares the gold with "yellow butter" to describe the appearance and abundance of the gold.