Every language has several types of words, the most basic of which are nouns and verbs. One language may borrow words from another language. When a pidgin language replaces the original language of the group, it is called a creole language. Nouns represent people, places, things, and ideas, and verbs describe action. Early human ancestors initiated the use of spoken language several million years ago, and humans began writing about 5,000 years ago. Sounds are the foundation of language. Other forms of language, such as writing and sign language, must be taught. Humans are born with the ability to understand language. Language made it possible for human societies to develop. Humans are born with the ability to understand language. At times people need to speak with others who do not know their language. Early human ancestors initiated the use of spoken language several million years ago, and humans began writing about 5,000 years ago. Language includes speaking, writing and making gestures, or body movements. People in different parts of a country may pronounce words differently or use local expressions. Without any formal training, children learn to speak by listening to other people s speech.