Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Bulgarian сумрак
Old Church Slavonic сѫмракъ (inherited)
Russian су́мерки (cognate)
Serbo-Croatian су̏мра̄к (cognate)
Serbo-Croatian sȕmrāk (mention)
Proto-Slavic *sǫmorkъ (inherited)

Serbo-Croatian сумрак (cognate)