Going from Vietnamese to Kazakh (าะฐะทะฐาัะฐ) has a composite linguistic distance of 89% (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 โ Cyrillic/Latin
Austroasiatic โ Turkic
The 5 languages with the lowest linguistic distance from Vietnamese:
A quick 3-question check between Vietnamese and Kazakh. No signup.