Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Occitan
secar
←
Latin
siccāre
(inherited(oc/ca))
←
Latin
siccāre
(inherited)
←
Latin
siccō
(mention)
→
Occitan
secada
(mention)