Only in Kalkatungu 1
Only in Wubuy 0
No unique sounds
What this means for learners
Kalkatungu and Wubuy share 25 sounds — roughly 96% of Wubuy's inventory overlaps with Kalkatungu. Shared sounds are ones a speaker already knows from their native language and will generally produce and perceive accurately without explicit training.
Conversely, Kalkatungu has 1 sound not used in Wubuy. Native Wubuy speakers learning Kalkatungu 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.