Going from Greek to Vietnamese (Tiแบฟng Viแปt) has a composite linguistic distance of 88% (heuristic estimate). Below is the dimension-by-dimension breakdown.
Shared vocabulary, cognates, and loanwords.
Morphology, syntax, word order, cases.
Shared sounds and phoneme inventory.
Greek โ Latin
Indo-European โ Austroasiatic
The 5 languages with the lowest linguistic distance from Greek:
A quick 3-question check between Greek and Vietnamese. No signup.