Noun is a word used to identify any of a class of people, places, or things (common noun), or to name a particular one of these (proper noun).
According to Wikipedia, a noun is a word that generally functions as the name of a specific object or set of objects, such as living creatures, places, actions, qualities, states of existence, or ideas.
This tool generates a set of random nouns from English language. You can select the number of nouns you want to generate. This tool is helpful is practicing English language as well as in quiz.