Office 2019 is the perpetual version of Office that is bought as a one-off cost (one-time purchase) and can be used for as long as needed on a single PC or Mac. Office 365 ProPlus can be used for as long as the subscription is valid for on 5 PCs or Macs as well as tablets and phones. These are subscription user-based licences that have ongoing monthly costs. Office 365 ProPlus is the version of Office that comes with certain Office 365 plans like E3 or E5, as well as being available as a standalone option, that can be bought on its own. Version of Office is included with Office 365 Personal or Home subscriptions, as well as some of the Office 365 Business and Enterprise subscriptions. Office 2019 was released in September 2018, while Office 365 comes with the cloud-connected version of Office, that is regularly updated with new features and is the best, most productive version of Office.
