What is the difference between the commands of 'ip vrf <word> and 'vrf definition <word> in virtual Route and Forwarding configuration?

Ip vrf and vrf defination are both used to create vrf but with a slight difference.

ip vrf is used to create vrf only for ipv4 address family whereas vrf defination can be used to create vrf for both ipv4 as well as ipv6 routes.