What type of figurative language is this, and which part in the sentence is it? "A constant whirring that had a metallic ring every few seconds, like sharp knives rubbing against each other"

Simile

Explanation:

This is a simile. A great way to identify a simile is to look for the words "like" or "as".

"A constant whirring that had a metallic ring every few seconds, like sharp knives rubbing against each other."

A simile compares two things. In this sentence, the "constant whirring" is being compared to "sharp knives".

I hope this helps :)

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explanation: