What are the nouns in this sentence?

A stack of books are piled on the table

stack, books, table

The nouns in this sentence are:

1. stack
2. books
3. table

To identify the nouns in a sentence, we need to look for words that represent people, places, things, or ideas. In the given sentence, "A stack of books are piled on the table," the nouns are:

- Stack: a noun representing a pile or a group of items.
- Books: a noun representing objects, in this case, multiple books.
- Table: a noun representing a piece of furniture.

To find the nouns in a sentence, you can follow these steps:

1. Read the sentence carefully and identify words that could be people, places, things, or ideas.
2. Eliminate any words that are not nouns, such as articles (a, an, the), pronouns, or verbs.
3. Take note of the remaining words, as they are likely to be nouns.

Remember, nouns can be singular (referring to one thing) or plural (referring to more than one thing).