CF has nearly all the important changes that DD has. It has differing marble types, it has mithril (a metal between steel and adamantium), it has a new magma-proof rock found in igneous areas, it has new meal names, creatures (some of which are trainable and tameable), new gems...
DD has new craft names that CF doesn't have, I think it alters the plants more, and I'm fairly certain CF has neither orcs nor pizza. And DD probably has more new wood names.
EDIT: Oh I forgot! DD does have lots of surface plants CF doesn't have. I forgot those because I deleted almost all of them when I played DD.