Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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English ayr
English faeder (doublet)
Manx ayr (borrowed)
Proto-Indo-European *peh₂- (root)

English father (doublet)
English pater (doublet)
English padre (doublet)
English père (doublet)
English faeder (doublet)