This document discusses different types of nouns including singular/plural nouns, possessive nouns, nouns as adjectives, and count/non-count nouns. It provides examples of how to make singular nouns plural by adding -s or -es and how possessive nouns are formed by adding 's. Nouns can also function as adjectives to modify other nouns. Finally, it explains that count nouns can be pluralized and preceded by articles while non-count nouns cannot.