yes, they are almost the same the greek d was actually a hard th sound iirc, Δελτα being pronounced 'thelta' as opposed to 'delta'. hopefully that clarifies (

yes, they are almost the same the greek d was actually a hard th sound iirc, Δελτα being pronounced 'thelta' as opposed to 'delta'. hopefully that clarifies (and is actually accurate) how octopuses and octopodes are connected