定义下列单词的意义和用法：
- demographics
- subjugation
- anachronism
- Demographics: It refers to statistical data about the characteristics of a population, such as age, gender, income, education level, etc. It is often used by marketers, researchers, and policymakers to understand a specific group of people and their behavior.

- Subjugation: It means the act of bringing someone or something under control. It could refer to the domination of one group or individual over another by force or coercion.

- Anachronism: It refers to something that is out of place in time or history. It could be an object, a word, a phrase or a custom that does not fit the period or context in which it is used. It is often used in the context of literary or historical analysis.