Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-West Germanic
*buggjan
→
English
buy
(inherited)
→
Old English
bycgan
(inherited)
→
Middle English
bien
(inherited)
→
Dutch
bocht
(derived)
→
Old Saxon
buggian
(inherited)