Answer:
A metaphor as a figure of speech compares two things that are not actually alike (in real life) but they have some characteristic in common that helps a reader or listener to visualize something about the person or thing being described.
Explanation: Examples:
Marie's smile was sunshine to everyone in the room. (Her smile made people feel warm, bright and happy.)
His insults were swords slicing into my heart. (His words felt like they would kill me.)
an old one: The pen is mightier than the sword. (Using effective writing to convince people of new ideas will have better results than using violence or war to force them to change.)