In zoology|lang=en terms the difference between faviid and caviid
is that
faviid is (zoology) any member of the faviidae while
caviid is (zoology) any member of the caviidae.
As nouns the difference between faviid and caviid
is that
faviid is (zoology) any member of the faviidae while
caviid is (zoology) any member of the caviidae.