Plagiarism is presenting someone else’s work (words or ideas) as your own, i.e. without acknowledgement
Collusion is working with others in an unauthorised manner.
Both of these offences can be committed intentionally or unintentionally.
Plagiarism and collusion offences are taken very seriously by the university and disciplinary consequences may extend to failing your degree, suspension and expulsion.
For detailed information on plagiarism, collusion, and how to avoid them: