Going from Croatian/Serbian to Guarani (Avaรฑe'แบฝ) has a composite linguistic distance of 83% (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/Cyrillic โ Latin
Indo-European โ Tupian
The 5 languages with the lowest linguistic distance from Croatian/Serbian:
A quick 3-question check between Croatian/Serbian and Guarani. No signup.