Genuine Account:
This refers to a legitimate, officially licensed Microsoft account that grants access to the subscription's features.
Microsoft Office 365:
This is a subscription service that provides access to the latest versions of Microsoft's productivity applications like Word, Excel, PowerPoint, Outlook, OneNote, and others.
Windows / macOS / Android / iOS:
The subscription allows you to install and use the Office applications on these different operating systems.
100GB OneDrive:
This cloud storage service allows you to save and access your files from anywhere, and the 100GB storage is included with the subscription.