Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Danish
pjece
←
Gaulish
*pettyā
(derived)
←
Proto-Celtic
*kʷezdis
(derived)
←
Welsh
peth
(cognate)
←
French
pièce
(borrowed)
←
Irish
cuid
(cognate)