Metonymy and synecdoche

Metonymy Definition

It is a figure of speech that replaces the name of a thing with the name of something else with which it is closely associated. We can come across examples of metonymy both from literature and in everyday life.

Metonymy, Synecdoche

Metonymy is often confused with another figure of speech called synecdoche. They resemble each other but are not the same. Synecdoche refers to a thing by the name of one of its parts. For example, calling a car “a wheel” is a synecdoche. A part of a car i.e. “a wheel” stands for the whole car. In a metonymy, on the other hand, the word we use to describe another thing is closely linked to that particular thing, but is not a part of it. For example, “Crown” which means power or authority is a metonymy.
Metonymy is different from a metaphor. A metaphor draws resemblance between two different things as in “You are sunlight and I moon” – Sun And Moon from Miss Saigon. Sunlight (and moon) and human are two different things without any association but it attempts to describe one thing in terms of another based on a supposed similarity. Metonymy, however, develops relation on the grounds of close associations as in “The White House is concerned about terrorism.” The White House here represents the people who work in it.

Examples of Metonymy in Everyday Life

We use metonymy frequently in our everyday life. For a better understanding, let us observe a few metonymy examples:

·         The pen is mightier than the sword. (Pen refers to written words and sword to military force.)

·         Let me give you a hand. (Hand means help.)

A Word Functioning as a Metonymy

Understanding the context of a metonymy is important. For example, the word "pen" is not always standing in for the written word; often, it just refers to the physical object of a pen.
The examples below include both the metonymy and the possible words for which the metonymy would fill in:

• Crown - in place of a royal person
• The White House - in place of the President or others who work there
• The suits - in place of business people
• Dish - for an entire plate of food
• Cup - for a mug
• The Pentagon - to refer to the staff
• The restaurant - to refer to the staff
• Ears - for giving attention ("Lend me your ears!" from Mark Antony in Julius Caesar)
• Eyes - for sight

Function of Metonymy

Generally, metonymy is used in developing literary symbolism i.e. it gives more profound meanings to otherwise common ideas and objects. By using metonymy, texts exhibit deeper or hidden meanings and thus drawing readers’ attention.  In addition, the use of metonymy helps achieve conciseness. For instance, “Rifles were guarding the gate” is more concise than “The guards with rifles in their hands were guarding the gate.”
Furthermore, metonymy, like other literary devices, is employed to add a poetic color to words to make them come to life. The simple ordinary things are described in a creative way to insert this “life” factor to the literary works.

http://examples.yourdictionary.com/examples-of-metonymy.html

http://literarydevices.net/metonymy/