Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Breton
yaouank
←
Proto-Brythonic
*jowank
(inherited)
←
Proto-Celtic
*yowankos
(inherited)
←
Proto-Indo-European
*h₂yuh₁n̥ḱós
(inherited)