Write one sentence that uses synecdoche and one sentence that uses metonymy.

Synechdoche is a literary device that uses a part of something to represent the whole. If a sentence reads "He asked for her hand in marriage", that's a synechdoche because obviously he doesn't want to just marry her hand, but her hand represents all of the person.

Metonymy is similar, but it is something new or related (not just a part of their body) that stands for the whole. For example, "the crown" refers to any person of royalty. If a sentence reads "The criminal got sent to the big house" it means they went to prison. "The big house" is a new name that stands in for the thing it describes.