Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
colomen
←
Proto-Brythonic
*kolom
(derived)
←
Welsh
(suffix)
←
Welsh
en
(suffix)
←
Latin
columba
(derived)
←
Middle Welsh
colomen
(inherited)