Spoken language is a language in its spontaneous form. It is different from written language. Many spoken languages have no written form. The term spoken language is sometimes used for oral language. The term "spoken language" is sometimes used to mean only vocal languages, especially by linguists, making all three terms synonyms by excluding sign languages. Others refer to sign language as "spoken", especially in contrast to written transcriptions of signs.
In spoken language, much of the meaning is determined by the context That contrasts with written language in which more of the meaning is provided directly by the text. In spoken language, the truth of a proposition is determined by common-sense reference to experience,
Why spoken language?
None of us can imagine our lives without communication and movement. They both give people the opportunity to learn and share knowledge with each other, to work and accumulate experience, to share their moods and emotions, to inform others about events, and to express their own opinions. Without gestures, facial expressions, and speech, people would cease to understand each other, and communication would be very difficult.