Here is some information I’m not sure if it right :)
Spoken texts include oral stories, interviews, dialogues, monologues (e.g. a welcome to country speech, a presentation to the class), phone conversations, discussions, role plays, or any other piece of spoken language.
Spoken texts also have shorter, less complex words and phrases. They have fewer nominalisations, more verb based phrases, and a more limited vocabulary. Spoken texts are lexically less dense than written language - they have proportionately more grammatical words than lexical words.