What this means for learners
KURDISH and Kurdish share 30 sounds — roughly 64% of Kurdish's inventory overlaps with KURDISH. Shared sounds are ones a speaker already knows from their native language and will generally produce and perceive accurately without explicit training.
The 9 sounds found only in Kurdish represent the greatest pronunciation challenge for KURDISH 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, KURDISH has 17 sounds not used in Kurdish. Native Kurdish speakers learning KURDISH 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.