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 ἐννέα
Old English niġon (cognate)
English nine (cognate)
Proto-Hellenic *ennéwə (inherited)
Proto-Indo-European *h₁néwn̥ (inherited)
Latin novem (cognate)
Sanskrit नवन् (cognate)
Old Armenian ինն (cognate)

English ennea- (mention)
English enneatical (mention)
English xenna- (derived)
English xenno- (derived)
Greek εννέα (borrowed)
Greek εννιά (inherited)
Spanish nueve (cognate)
Ancient Greek ἐνενήκοντα (mention)
Ancient Greek ἐννῆμαρ (affix)
Italian enneade (mention)
Latin novem (cognate)
Latin enneas (mention)
Lithuanian devyni (cognate)
Latvian deviņi (cognate)
Kalo Finnish Romani enja (cognate)
Sanskrit नवन् (cognate)