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Proto-Germanic *grēwaz (inherited)
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Proto-Indo-European *ǵʰreh₁- (inherited)
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Old Norse grár (inherited)
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Norwegian Bokmål gråsone (compound)
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Norwegian Bokmål gråhåra (suffix)
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Norwegian Bokmål blågrå (affix)
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Norwegian Bokmål grågås (affix)
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Norwegian Bokmål gråbein (compound)