Read the following sentence and find out the object nouns in them.
She has to listen to the Dean this time.

The correct answer is: Dean

A subject noun is a noun that is the subject of the sentence. A subject is a noun that performs the action in that sentence. In contrast, an object noun is a noun that is the object of the sentence i.e., the object noun is the receiver of the action in a sentence. 'She has to listen to the Dean this time', here the object noun is 'Dean'.