Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-West Germanic
*kokk
→
English
cock
(inherited)
→
Old English
cocc
(inherited)
→
Old English
coc
(inherited)
→
Middle English
cok
(inherited)
→
Yola
cuck
(inherited)