What is the difference between a dataverse and a dataset?

A dataverse is basically a folder, and in this folder datasets can be created. You can use a dataverse to group datasets on subject, research group or by faculty. Whether you have the permission to create your own dataverse can differ per institute. Please contact your local DataverseNL administrator to get more information about your permissions. See this list for contact information per institute under the tab 'support' at  https://dataverse.nl/