Going from Vietnamese to Kyrgyz (ΠΡΡΠ³ΡΠ·ΡΠ°) has a composite linguistic distance of 93% (heuristic estimate). Below is the dimension-by-dimension breakdown.
Shared vocabulary, cognates, and loanwords.
Morphology, syntax, word order, cases.
Shared sounds and phoneme inventory.
Latin β Cyrillic
Austroasiatic β Turkic
The 5 languages with the lowest linguistic distance from Vietnamese:
A quick 3-question check between Vietnamese and Kyrgyz. No signup.