No it is not, it is the process of spontaneous transport of molucules.
Examples of metaphors from the Polar Express:
1.The train wrapped in a apron of steam, 2.Lights appeared in the distance. They looked like the lights of an ocean liner sailing on a frozen sea.
3. crossed a barren desert of ice.
Examples of similes from the Polar Express:
1. candies with nougat centers as white as snow.
2. hot cocoa as thick and rich as melted chocolate bars.
3. rolling over peaks and through valleys like a car on a roller coaster.
you are going to want to click on the 1st and 3rd
