📄️ 2.1. Introduction2.1.1. What Is a Noun?📄️ 2.2. Plural of Nouns2.2.1. Forming Plural Nouns📄️ 2.3. Other Topics2.3.1. Countable Nouns and Uncountable Nouns📄️ 2.4. Gender Patterns2.4.1. Masculine Gender