What this means for learners
Brahui and Kurdish share 24 sounds — roughly 56% of Kurdish's inventory overlaps with Brahui. Shared sounds are ones a speaker already knows from their native language and will generally produce and perceive accurately without explicit training.
The 15 sounds found only in Kurdish represent the greatest pronunciation challenge for Brahui 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, Brahui has 19 sounds not used in Kurdish. Native Kurdish speakers learning Brahui 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.