Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Occitan
glaç
←
Proto-Indo-European
*gel-
(derived)
←
Latin
glaciēs
(inherited)
→
Occitan
conglaç
(link)