synekdoosia
Synekdooche is a figure of speech in which a part of something is used to refer to the whole, or vice versa. This rhetorical device is often used to create vivid imagery or to emphasize a particular aspect of a subject. For example, in the phrase "all hands on deck," the term "hands" represents the entire crew of a ship, emphasizing their collective effort. Similarly, in "the White House," the term "White House" refers to the entire executive branch of the U.S. government, with the president as its head. Synekdooche can also be used to refer to a whole from a part, such as in the phrase "the Pentagon," which refers to the entire U.S. Department of Defense. This figure of speech is commonly used in literature, poetry, and everyday language to create a more engaging and memorable expression.