Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
dydd Sul
←
Breton
disul
(cognate)
←
Welsh
dydd
(compound)
←
Welsh
Sul
(compound)
←
Cornish
de Sul
(cognate)
←
Latin
diēs Sōlis
(partial calque)
→
Breton
Sul
(cognate)