Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
pont
←
Latin
pons
(borrowed)
→
English
Pontarddulais
(derived)
→
English
Pont-y-pant
(derived)
→
French
pont
(cognate)