Editions

Edition	Description
Consumer	contains Pro, Education and Enterprise which is mainly for company that use volume license
Business	contains Home, Pro, and Education which is mainly for personal and special organization that use OEM or retail product key.

N editions of Windows are available in Europe, and are missing a few media-related features:

Licences

Licence type	Description
OEM	an Original Equipment Manufacturer refers to the license that a manufacturer installs on new devices. The product key isn't transferable, and you can't use it to activate another installation. (Unless you're re-activating a new installation on the same computer.)
Retail	A Retail license refers to the license that you acquire when purchasing a copy of Windows. You can transfer the product key to another computer, as long as you deactivate the old device.