Question

a comparison between two unlike things that uses like or as
simile
mood
metaphor
symbolism

Explanation:

This is a definition of a literary device. A simile explicitly compares two distinct things using the words 'like' or 'as', which matches the given description. Mood refers to the emotional atmosphere of a work, a metaphor compares two unlike things without 'like' or 'as', and symbolism uses objects to represent abstract ideas.

Answer:

Simile