Natural languages are languages that have developed naturally among humans, evolving over time as people communicate with each other. These languages are spoken or signed by communities and have complex, rule-based structures. Examples of natural languages include English, Spanish, Chinese, Arabic, and many others. They are used for everyday communication and are constantly evolving through cultural, social, and historical influences. Natural languages are contrasted with artificial languages, which are created intentionally for specific purposes, such as computer programming languages like Python or constructed languages like Esperanto.