A key difference is that Ukraine has land borders with the EU, with significant potential for trade, while Georgia lacks land borders with the EU which limits the potential in harnessing the single market.
That's not a key difference though, that's the same situation Greece was from 1981 until 2007 when Bulgaria and Romania joined, and Ireland, Cyprus and Malta are still in this situation (unlikely to change). And again similar to Greece and Ireland Georgia has access to sea ports, and Bulgaria and Romanian ports are not far away.
tpm|4 days ago