I'm not sure if those are the elements you mean, but major traits of folktales are that:
- They are being told in an oral way from generation to generation
- They present how people imagine and explain wonders of the world
alliteration is when you use a bunch of similar consonants in a row while assonance is when you use a bunch of similar vowel sounds in a row
Hello.
Written language often requires a more fluent level of comunication, which can prevent people from expressing their attitudes and emotions.
Spoken language, however, allows the speakers to add their own touch to the conversation, like facial expressions and hand movements.
Hope I helped.