Metaphor is a locution consisting in using of words and expressions in figurative sense on the basis of any analogy, similarity and comparison.
As a rule, metaphor is called as an interesting comparison of some expression. Let's try to understand together what’s role of metaphor in our speech.
Very well known sayings and proverbs are very good example of metaphors. It is figuratively corrupt image of anything. Metaphors serve to facilitate our understanding of what other people inform us about in the hope that we will comprehend them how they wish it. For example: “The sunset resembles a fire”. An unusual and a sonorous word is a metaphor. It is true that in the evening a sunset is colourful-bright and has a resemblance to a fire. Even it is possible to imagine the whole horizon in an enormous fire. They took and simply transferred a fire in that place where it actually is not.
Similes and metaphors can be met often in our life. They are used in fairy tales and in verses. The most common conversation is filled by metaphors which are imperceptible for us.
Metaphors are very often used in works of art. And they are not only literary works, both musical and painting works. For example, a guitar. Guitar sounds are very similar to crying. And it is used in rock music. As a result, guitar sounding becomes a metaphor of a voice of a person. Gifted and talented people use metaphors more often than others. Exact and apt comparison helps to compose songs and write jokes.
Metaphor is necessary to describe a person, a situation from his life, a landscape, experiences and feeling or any situation with a sense. A good metaphor can save words; it will tell a little, but in essence. Figurativeness of metaphor draws attention to itself. Creative people are able to use it well in their trades. Verses remain simply as poetastery if a poet can compose a rhyme, but can't invent a figurative comparison. It concerns also all other kinds of art.
It is important to possess an ability to invent a metaphor. More expressive and exacter comparison helps to look at a very common occurrence in a different way. And as a result, original and not ordinary thoughts and ideas come.
To think up a metaphor is not so difficult. They simply come themselves. The most important thing is you shouldn't prevent your head to compose them. =)