Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Breton
bouzar
←
Proto-Brythonic
*boðar
(inherited)
←
Proto-Celtic
*bodaros
(inherited)
←
Proto-Indo-European
*bʰodʰHrós
(inherited)
→
Welsh
byddar
(cognate)
→
Sanskrit
बधिर
(cognate)