What this means for learners
Arabic and Burushaski share 14 sounds — roughly 24% of Burushaski's inventory overlaps with Arabic. Shared sounds are ones a speaker already knows from their native language and will generally produce and perceive accurately without explicit training.
The 45 sounds found only in Burushaski represent the greatest pronunciation challenge for Arabic 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, Arabic has 23 sounds not used in Burushaski. Native Burushaski speakers learning Arabic 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.