400 - Language
* 410 - Linguistics: This section covers the study of language, including its structure, history, and development.
* 420 - English language: Here you'll find books and resources about the English language, including its grammar, vocabulary, and literature.
* 430 - German language: Covers the German language, its grammar, and literature.
* 440 - French language: Focuses on the French language, including its grammar, vocabulary, and literature.
* 450 - Italian language: Covers the Italian language and its literature.
* 460 - Spanish language: Includes information on the Spanish language, grammar, and literature.
* 470 - Latin language: This section focuses on the Latin language, its grammar, and literature.
* 480 - Greek language: Covers the Greek language, its grammar, and literature.
* 490 - Other languages: This broad category encompasses languages not specifically covered in other 400 sections, such as Asian, African, and Indigenous languages.
Let's delve into a couple of examples:
* 420.9 - History of the English language: You might find books about the evolution of English, its dialects, and its influence on other languages.
* 491.5 - Chinese language: This category would include books on Chinese grammar, vocabulary, literature, and the history of the Chinese language.
Remember, the Dewey Decimal System is hierarchical, meaning it breaks down topics into increasingly specific categories. So, within the 400s, you'll find even more detailed subcategories.