Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Saxon
kunnan
←
Proto-West Germanic
*kunnan
(inherited)
←
Proto-Indo-European
*ǵneh₃-
(root)
→
Old English
cuþ
(mention)
→
Low German
könen
(inherited)
→
Old Saxon
bikunnan
(prefix)
→
Old Saxon
kuth
(mention)