How do you differentiate writing from speaking

Speech uses tone groups, and a tone group can convey only one idea. Writing uses sentences, and a sentence can contain several ideas. A fundamental difference between casual speech and writing is that speech is spontaneous whereas writing is planned. Repetition is usually found in speech

Explanation:

This is explaining that writing is planned when speaking isn't.

writing is kind of written , it may speak through mind. while speaking is vocal that can hear When we speak, we usually need to be in the same place and time as the other person. Despite this restriction, speaking does have the advantage that the speaker receives instant feedback from the listener. The speaker can probably see immediately if the listener is bored or does not understand something, and can then modify what he or she is saying.

When we write, our words are usually read by another person in a different place and at a different time. Indeed, they can be read by many other people, anywhere and at any time. And the people reading our words, can do so at their leisure, slowly or fast. They can re-read what we write, too. But the writer cannot receive immediate feedback and cannot (easily) change what has been written.

i believe it is "he will always remain extremely timid" if its wrong sorry