When it comes to updating the local workspace, the command which is used often is Update. It reflects all the modifications made to the document by any member of the team. On the other side, the Commit make sure to implement properly the same modifications made to the data from present location to the repository. It can also be said that it simply upload the files and the documents in the repository without making the users to made any sort of efforts.
🔗Source: SVN Interview Questions and Answers