Is netfilter hook and iptables rules are same?

Hi all,
         What is the difference between the netfilter hooks
and iptables rules?

Are both same?

If different, how the packet traverses through the stack?

What is the behaviour, if we insmod a netfilter hook at
PRE_ROUTE to
drop the packet and insert a rule using iptables at
PREROUTING chain
to QUEUE the packet?

Thanks
Ganesan