Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Catalan
legislador
←
Latin
lēgislātor
(borrowed)
←
Latin
lēgō
(mention)
→
Catalan
legislar
(back-formation)