English (New Zealand) vs Ao-Naga

English (New Zealand) and Ao-Naga share 15 sounds — roughly 33% of Ao-Naga's inventory overlaps with English (New Zealand). Shared sounds are ones a speaker already knows from their native language and will generally produce and perceive accurately without explicit training.

The 20 sounds found only in Ao-Naga represent the greatest pronunciation challenge for English (New Zealand) 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, English (New Zealand) has 30 sounds not used in Ao-Naga. Native Ao-Naga speakers learning English (New Zealand) 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.