Shared sounds 35
What this means for learners
Marathi and Kumauni share 35 sounds — roughly 64% of Kumauni's inventory overlaps with Marathi. Shared sounds are ones a speaker already knows from their native language and will generally produce and perceive accurately without explicit training.
The 7 sounds found only in Kumauni represent the greatest pronunciation challenge for Marathi 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, Marathi has 20 sounds not used in Kumauni. Native Kumauni speakers learning Marathi 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.