Answer:
1: Tone/Mood
2: Rhymes
3: Tongue twisters
4: Setting
Step-by-step explanation:
By repeating rain and night it sets the mood for sadness or somberness.
By repeating things it will seem to rhyme (Something our mind does)
By repeating the same words it can cause a tongue twister
By repeating tress ,cabins, or forests, you'll gai knowledge of what the setting takes place in.
Just like saying anything over and over again and fast, it makes an entirely different word, like cat.