please explain yum list to me...

[Linuxguy123]

Why is this ?

$ yum list *synaptics*
Loaded plugins: downloadonly, kmdl, priorities, refresh-packagekit
2 packages excluded due to repository priority protections
Available Packages
synaptics.i386   0.14.6-11.fc10  fedora


Yet... 

$ yum list xorg-x11-drv-synaptics
Loaded plugins: downloadonly, kmdl, priorities, refresh-packagekit
2 packages excluded due to repository priority protections
Installed Packages
xorg-x11-drv-synaptics.i386  0.15.2-2.fc10  installed

Why doesn't *synaptics* find xorg-x11-drv-synaptics ?

Thanks