Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
coginio
←
Welsh
cog
(mention)
←
Welsh
-io
(affix)
←
Proto-Indo-European
*pekʷ-
(root)
←
Proto-Indo-European
*pekʷ-
(derived)
←
Latin
coquus
(derived)
→
Welsh
cog
(link)