In our daily life we use both verbal and non-verbal features of communication. We use spoken and written forms of communications. There are many differences in between these two forms, they are as follows:

SPOKEN	WRITTEN
Spoken language is the principal objective or the principal form of communication	Written form of communication is the graphical representation of spoken language
Spoken form is more comprehensible	Written form is less comprehensible
To establish the fact that anyone singing a song and we listening to it helps us memorize it easily	Writing cannot be reproduced in natural speech or a spontaneous speech easily
Speech is automatic habit in every state of human language learning	Writing follows the spoken language or speech
Spoken form is broken language as it never follows  the rules of grammar	Written form is a ruled governed system and is rigid about the grammatical rules
Spoken language can be used colloquially	Writing cannot be used colloquially