Categorize all the words from the sentence into either nouns, verbs, adjectives or adverbs.
The peaceful river gently rippled in the summer breeze.
Nouns: river, breeze, summer
Verbs: rippled
Adjectives: peaceful
Adverbs: gently
Complete the following task based on the instruction and optional input provided.### Instruction:
Categorize all the words from the sentence into either nouns, verbs, adjectives or adverbs.

### Input:
The peaceful river gently rippled in the summer breeze.

### Output:
Nouns: river, breeze, summer
Verbs: rippled
Adjectives: peaceful
Adverbs: gently