[arch-general] Is Nouveau 2D or 3D acceleration driver for nVidia cards?

The description of package xf86-video-nouveau ( http://www.archlinux.org/packages/extra/x86_64/xf86-video-nouveau) is "Open Source 2D acceleration driver for nVidia cards", but Arch Wiki( https://wiki.archlinux.org/index.php/Nouveau) says that it is "Open Source 3D acceleration graphics driver for NVIDIA cards". Is there any mistakes?