How does communication differ from speech?

Communication is the process of conveying information between two or more people. Speech is one method of communicating. There are numerous other methods, including ASL (American Sign Language), music, smoke signals, etc.

Communication differs from speech in many ways, people who are unable to speak may communicate using sign-language or they may write what they want to communicate on paper or a computer.

There are so many other ways for people to communicate without using speech such as Morse Code, smoke-signals, body-language, hand and head gestures and lip-reading to name but a few.

Communication does not happen just between people though and believe it or not many of our appliances actually communicate too such as those that communicate using Wi-fi and infra-red.

Animals also communicate with each other without the need of speech as do plants...the difference between communication and speech is huge.