Synchronous and Asynchronous

From what I understand, Synchronous activities include more immersion and usage of the body and mind. A common example would be human interaction. When meeting in person, there are many parts of the body we use. We speak using vocals, we use facial expressions and hand gestures to enhance the conversation, and we also use body motions. We naturally analyze and combine all of the information (vocals, body motions, hand gestures, facial expressions) to put together the information the person is trying to communicate. All of these features together can make communication more comprehensible and interesting. I believe this to be a synchronous way of communicating. It's different from using instant messaging/texting software. Instant messaging only involves the user using their fingers to input information (assuming no text to speech). We only read inputted text from the person. Even though there exists emoticons to add emotion to instant messages, it will never be the same as taking in person. Emotions have different measures of intensity and that can't be represented entirely by emoticons. In the computer world, everything is digital. Digital is only a finite and estimated representation of the analog world we live in. Feels like I digressed here...