Originality reports is a new feature introduced by Google a few weeks ago that helps teachers conduct originality scans on students work. Instead of the traditional way of using Google Search to look for plagiarism, Originality reports, which is integrated with Classroom and Assignments , “compares student work against hundreds of billions of web pages and over 40 million books with a single click”.
https://www.educatorstechnology.com/2020/11/a-new-google-drive-feature-to-check-for.html