Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Catalan
-uc
←
Latin
-ūcus
(inherited)
→
Catalan
malastruc
(affix)
→
Catalan
astruc
(affix)