Going from Korean to Amharic (አማርኛ) has a composite linguistic distance of 87% (heuristic estimate). Below is the dimension-by-dimension breakdown.
Shared vocabulary, cognates, and loanwords.
Morphology, syntax, word order, cases.
Shared sounds and phoneme inventory.
Hangul → Ge'ez
Koreanic ↔ Afro-Asiatic
The 5 languages with the lowest linguistic distance from Korean:
A quick 3-question check between Korean and Amharic. No signup.