What is a metaphor?

A metaphor is a figure of speech that makes a direct comparison between two unlike things by stating that one thing is another, thereby suggesting a hidden similarity or connection without using comparative words like 'like' or 'as.' This allows for a deeper understanding of an object or concept, creating vivid imagery and an emotional connection.

For example, saying "Time is a thief" suggests that time steals moments from our lives, even though time is not literally a thief. This way of comparing enriches the language and helps convey complex ideas succinctly.

The other options describe different literary devices: the first one defines a simile, which does use comparative words; the third describes hyperbole, known for exaggerating for emphasis; and the fourth relates to descriptive language that doesn't necessarily involve a comparison at all.