Only in Burushaski 33
What this means for learners
Burushaski and Fɔn share 26 sounds — roughly 44% of Fɔn's inventory overlaps with Burushaski. Shared sounds are ones a speaker already knows from their native language and will generally produce and perceive accurately without explicit training.
The 16 sounds found only in Fɔn represent the greatest pronunciation challenge for Burushaski 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, Burushaski has 33 sounds not used in Fɔn. Native Fɔn speakers learning Burushaski 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.