Nouns

1. [Article] + [Determiner]+ [Noun (S/P)]

2. Forms

2.1. Singular / Plural

2.1.1. S: cat P: cats

2.1.2. S: bus P: buses

2.2. Countable / Uncountable

2.3. Common / Proper

3. Articles

3.1. A / an / the

4. Determiners

4.1. Some / many / any