Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Irish
dám
←
Breton
deuñv
(cognate)
←
Proto-Celtic
*dāmā
(inherited)
←
Ancient Greek
δῆμος
(cognate)
←
Proto-Indo-European
*dṓm
(derived)
←
Proto-Indo-European
*deh₂-
(mention)
←
Old Cornish
dof
(cognate)
←
Middle Welsh
daw
(cognate)
→
Ancient Greek
δῆμος
(cognate)