Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Old High German reginbogo
Proto-Germanic *regnabugô (inherited)
Proto-Indo-European *bʰewgʰ- (root)

Old English regnboga (cognate)
German Regenbogen (inherited)
Luxembourgish Reebou (inherited)
Vilamovian rǡnabȫga (inherited)
Yiddish רעגנבויגן (inherited)