Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Breton
gwrizienn
←
Breton
(suffix)
←
Breton
enn
(suffix)
←
Proto-Celtic
*wradios
(derived)
←
Welsh
gwraidd
(cognate)
←
Proto-Indo-European
*wréh₂ds
(derived)
←
Cornish
gwreydh
(cognate)
←
Old Breton
uraed
(derived)
←
Middle Breton
gruizyenn
(inherited)
→
Welsh
gwraidd
(cognate)