What defines a metaphor in language?

A metaphor is a figure of speech that involves comparing two unlike things without using "like" or "as." This comparison is made to highlight similarities between the two, allowing for a deeper understanding of one concept through the lens of another. For example, saying "time is a thief" suggests that time steals moments from our lives, which creates an imaginative connection between the abstract concept of time and the concrete act of stealing. This creative comparison enriches language, making it more evocative and impactful.

In contrast, using a word literally conveys its straightforward meaning without embellishment or comparative elements. Describing a process refers to explaining how something occurs or operates, which does not involve the figurative language that characterizes metaphors. Lastly, using repetitive phrases refers to stylistic choices in writing or speech, but does not inherently relate to the comparison of unlike things that defines a metaphor. Thus, the essence of a metaphor lies firmly in drawing imaginative parallels between dissimilar subjects.