In zoology|lang=en terms the difference between carnid and caenid
is that
carnid is (zoology) any member of the carnidae while
caenid is (zoology) any member of the caenidae.
As nouns the difference between carnid and caenid
is that
carnid is (zoology) any member of the carnidae while
caenid is (zoology) any member of the caenidae.