Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Proto-Indo-European *-yós

English paralian (mention)
English epicene (mention)
English biennium (derived)
English demiurge (derived)
English prandial (cognate)
English epitrachelion (derived)
English discaire (root)
Ancient Greek κοινός (affix)
Ancient Greek -ιος (derived)
Ancient Greek τοῖος (mention)
Ancient Greek κυλλός (mention)
Latin -arius (mention)
Latin -eus (mention)
Latin -eus (mention)
Latin -ius (inherited)
Lithuanian -ias (mention)
Norwegian Bokmål aksessoar (derived)
Old Norse svili (mention)
Sanskrit जेन्य (suffix)