Going from Tigrinya to Vietnamese (Tiแบฟng Viแปt) has a composite linguistic distance of 85% (heuristic estimate). Below is the dimension-by-dimension breakdown.
Shared vocabulary, cognates, and loanwords.
Morphology, syntax, word order, cases.
Shared sounds and phoneme inventory.
Ge'ez โ Latin
Afro-Asiatic โ Austroasiatic
The 5 languages with the lowest linguistic distance from Tigrinya:
A quick 3-question check between Tigrinya and Vietnamese. No signup.