Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Germanic
*knudan-
→
English
knoll
(inherited)
→
German
Knolle
(inherited)
→
Luxembourgish
Knoll
(inherited)
→
Dutch
knol
(derived)