This creative writing idea is about providing a head start.
Sometimes it helps to have a broad vocabulary from which to choose at the start of writing – this more selective than ‘finding’ words in an existing text [e.g.using older texts for found poetry]. The process/purpose is the same: writers can get that head start by having a ready vocabulary that might not have occurred without prompting.
As with the other recent additions here on the site, details and process are explained in the resource sheets: