Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
copa
←
Old English
cop
(derived)
←
Middle English
cop
(borrowed)
←
Proto-Germanic
*kuppaz
(derived)
→
Welsh
copog
(suffix)