dkms наверно он имел ввиду)
kmods are prebuilt kernel modules. akmods are effectively the source code for the module and on each boot if it finds that the kmod for that kernel is not installed it will build one locally and install it. akmods have the advantage that they can build modules even if the repositories don't have prebuilt ones for one reason or another (such as test updates etc) but the downside is that they need the appropriate compilers and headers installed in order to build the new modules. dkms is just another similar system. CentOS should be supported by rpmfusion to the best of my knowledge just like with fedora so i would check there first.
https://forums.fedoraforum.org/showthread.php?249991-kmod-akmod-dkms