There mainly 5 types of workflows that are provided by SharePoint as built in workflow. "Collect Feedback Workflow" is one of that.
Definition of Collect Feedback Workflow from the source:
The Collect Feedback workflow routes a document or item that is saved to a list or library to a group of people to collect their review feedback. By default, the Collect Feedback workflow is associated with the Document content type and it is thus automatically available in document libraries.
To learn more about Collect Feedback Workflow you can read the given article.
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