Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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English knack
German knacken (cognate)
English crack (mention)
Middle English krak (inherited)
Middle English knakke (mention)
Middle English knakken (mention)

English knick-knack (mention)
English knackish (suffix)
English knacky (suffix)
English knackless (suffix)