Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Middle English knowen
Old English cnāwan (inherited)
Proto-Indo-European *ǵneh₃- (root)

English know (inherited)
English known (inherited)
English knowledge (mention)
English knowen (inherited)
Middle English aknowen (affix)
Middle English knowleche (suffix)
Yola knouth (inherited)