Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Middle English whetten
Old English hwettan (inherited)
Proto-Germanic *hwatjaną (inherited)
Proto-West Germanic *hwattjan (inherited)

English whet (inherited)
Middle English whestone (affix)
Middle English whettynge (affix)
Scots what (inherited)
Yola what (inherited)