Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Occitan
gant
←
Proto-Germanic
*wantuz
(derived)
←
Old Occitan
guant
(inherited)
→
Occitan
agantar
(confix)