Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
cyw
←
Proto-Celtic
*kuwios
(inherited)
←
Proto-Indo-European
*ḱuh₁-yó-s
(inherited)
←
Proto-Indo-European
*ḱewh₁-
(mention)
→
Welsh
cywion
(affix)