“Presenting work or ideas from another source as your own, with or without consent of the original author, by incorporating it into your work without full acknowledgement....
...Avoiding plagiarism is not simply a matter of making sure your references are all correct, or changing enough words so the examiner will not notice your paraphrase......."
https://www.ox.ac.uk/students/academic/guidance/skills/plagiarism#:~:text=The%20University%20defines%20plagiarism%20as,your%20work%20without%20full%20acknowledgement.