Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
cawod
←
Breton
kaouad
(cognate)
←
Proto-Celtic
*kowVt-
(inherited)
←
Proto-Indo-European
*ḱeh₁-u-
(inherited)
←
Cornish
kowas
(cognate)
←
Latin
caurus
(cognate)
←
Lithuanian
šiáurė
(cognate)
←
Russian
се́вер
(cognate)
→
Welsh
cawodi
(affix)