Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Middle English gein
Old English ġeġn (inherited)
Old Norse gegn (borrowed)
Old Norse gagn (borrowed)

English gain (mention)
English gain (mention)
English gain (mention)
Middle English gain (alter)
Middle English gayn (alter)
Middle English gayn (alter)