This document discusses count and non-count nouns. It provides examples of common, proper, collective, and abstract nouns. Count nouns can be singular or plural, while non-count nouns are always singular. Food items, liquids, gases, and abstract concepts are usually non-count. Measure words like "glass of" are used with non-count nouns to indicate quantity. Several exercises are provided to practice identifying count and non-count nouns and using correct grammar with them.