Is a form of the verb that acts as a noun.

A gerund is a form of the verb that acts as a noun.

A gerund is a common part of speech and it is formed by adding "-ing" at the end of the word. Moreover, gerunds can work as nouns in a sentence. For example, in the sentence "Swimming is good for your health" the gerund "swimming" is functioning as a noun and the head word of the subject. However, gerunds must not be confused with present participles, which also end in -ing. Unlike gerunds, present participles act as verbs or adjectives.

answer: could you give the examples?

explanation:

it is the background information on the characters and setting explained at the beginning of the story. the exposition will often have information about events that happened before the story began. the exposition is often the very first part of the plot.