What this means for learners
Georgian and Squamish share 18 sounds — roughly 49% of Squamish's inventory overlaps with Georgian. Shared sounds are ones a speaker already knows from their native language and will generally produce and perceive accurately without explicit training.
The 19 sounds found only in Squamish represent the greatest pronunciation challenge for Georgian 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, Georgian has 17 sounds not used in Squamish. Native Squamish speakers learning Georgian 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.