Shared sounds 40
What this means for learners
Gujarati and Kumauni share 40 sounds — roughly 67% of Kumauni's inventory overlaps with Gujarati. Shared sounds are ones a speaker already knows from their native language and will generally produce and perceive accurately without explicit training.
The 2 sounds found only in Kumauni represent the greatest pronunciation challenge for Gujarati 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, Gujarati has 20 sounds not used in Kumauni. Native Kumauni speakers learning Gujarati 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.