Which of the following is the definition of a metaphor?

A metaphor is defined as a direct comparison between two unlike things, where one thing is described in terms of another in order to highlight a particular quality or characteristic. This figurative language device allows for deeper understanding and adds layers of meaning by suggesting that the two entities share some underlying connection, despite their apparent differences.

In literary applications, metaphors enrich the text by creating vivid imagery and prompting readers to think beyond literal interpretations. For instance, saying "Time is a thief" does not mean time literally steals; rather, it conveys the idea that time can take away moments and experiences, evoking emotions and insights about the nature of time itself.

The other choices represent different literary terms: a statement that relates to sensory experience refers to imagery; a phrase that combines contradictions describes an oxymoron; and a repetition of initial consonant sounds is known as alliteration. These are distinct from the concept of a metaphor, which is specifically focused on direct comparisons.