Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Middle Low German
bok
←
Proto-Germanic
*bōks
(inherited)
←
Proto-West Germanic
*bōk
(inherited)
←
Old Saxon
bōk
(inherited)