What this means for learners
YANYUWA and Wubuy share 17 sounds — roughly 53% of Wubuy's inventory overlaps with YANYUWA. Shared sounds are ones a speaker already knows from their native language and will generally produce and perceive accurately without explicit training.
The 8 sounds found only in Wubuy represent the greatest pronunciation challenge for YANYUWA 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, YANYUWA has 15 sounds not used in Wubuy. Native Wubuy speakers learning YANYUWA 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.