Portuguese (European) vs South Azerbaijani
Sound inventory comparison
Only in Portuguese (European) 27
What this means for learners
Portuguese (European) and South Azerbaijani share 20 sounds — roughly 43% of South Azerbaijani's inventory overlaps with Portuguese (European). Shared sounds are ones a speaker already knows from their native language and will generally produce and perceive accurately without explicit training.
The 13 sounds found only in South Azerbaijani represent the greatest pronunciation challenge for Portuguese (European) speakers. The adult brain tends to map unfamiliar sounds onto the closest native equivalent — a process that produces the characteristic "accent" of a second-language speaker. Learning to hear and produce these sounds as distinct requires focused ear training, not just repetition.
Conversely, Portuguese (European) has 27 sounds not used in South Azerbaijani. Native South Azerbaijani speakers learning Portuguese (European) will face the mirror-image challenge with these sounds.
Phoneme inventories from PHOIBLE. Data reflects one documented inventory per language; some variation exists across dialects and sources.