What is the difference between OneDrive and SharePoint?
In short, OneDrive is for an individual user while SharePoint is for an entire department or team.
Both OneDrive and SharePoint Online are Cloud-based document management and collaboration tools from Microsoft. OneDrive is designed to be used to house an individual user's files. Files saved to a user's Desktop or Documents folders can be synchronized to OneDrive, allowing easy access across multiple devices and through https://www.office.com/.
SharePoint is a central location for an entire department or team to house files. SharePoint has the concept of a "site"; a site is a collection of similar documents and communications. Sites can be setup per department, per client, or by any other means. Optionally, SharePoint sites can be used as public-facing communications to clients or even to the public at large.