Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Old Irish úar
Proto-Celtic *ougros (inherited)
Welsh oer (cognate)
Ancient Greek ὥρα (derived)
Proto-Indo-European *h₃ewǵ- (derived)
Proto-Indo-European *yeh₁- (derived)
Latin hōra (borrowed)
Old Irish úarda (link)
Old Irish úacht (link)
Old Irish úaire (link)
Old Irish ór (link)
Old Irish fecht (link)
Old Irish inam (link)
Old Irish tráth (link)
Old Armenian ոյծ (cognate)

Welsh oer (cognate)
Irish fuar (inherited)
Irish uair (inherited)
Irish adhfhuar (mention)
Scottish Gaelic fuar (inherited)
Scottish Gaelic uair (inherited)
Manx feayr (inherited)
Middle Irish úar (inherited)
Old Armenian ոյծ (cognate)