What is the name of the literary concept in which the formation of the word is associated with it's sound?

Onomatopoeia - words that associate with sounds ... (example: bang, clap, boom, honk ...)

A simile uses Like and As. (As fast as an eagle)

A metaphor is nearly a normal word. (knuckle under)

An onomatopoeia uses sound to describe something. We have read alot of stories that contains em'. (Bam, Whoosh, Pitter-Patter, bang, splash)

The answer is onomatopoeia.

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