Windows is a branding of an OS based on one specific element. It isn't like Microsoft sues Apple for any references to a window in Mac documentation. App Store

Windows is a branding of an OS based on one specific element. It isn't like Microsoft sues Apple for any references to a window in Mac documentation. App Store is a branding of an application store. The operating system equal would being someone trying to trademark Operating Sys or something of the like, not trying to brand a generic word.