Nouns are words that name people, places, things, or ideas. There are different kinds of nouns including common nouns, proper nouns, abstract nouns, concrete nouns, countable nouns, uncountable nouns, compound nouns, and collective nouns. Common nouns name general people, places, or things while proper nouns name specific people, places, or things. Abstract nouns name things you can't perceive with senses and concrete nouns name things you can perceive with senses.