Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Ancient Greek δεκάς
Ancient Greek δέκᾰ (affix)
Ancient Greek -ᾰ́ς (affix)
Ancient Greek δυάς (mention)
Ancient Greek τριάς (mention)
Ancient Greek τετράς (mention)
Ancient Greek χιλιάς (mention)
Ancient Greek μυριάς (mention)
Lithuanian dešimt (cognate)
Latvian desmit (cognate)
Proto-Slavic *desętь (cognate)

English decade (derived)
English decadarchy (mention)
English dekadarchy (mention)
Cebuano dekada (derived)
German Dekade (derived)
Spanish década (derived)
Ancient Greek δυάς (mention)
Ancient Greek πεμπτάς (mention)
Ancient Greek πεντάς (mention)
Indonesian dekade (derived)
Latin decas (derived)
Portuguese década (derived)