Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Catalan
roina
←
Catalan
roïna
(mention)
←
Catalan
ruïna
(doublet)
←
Latin
ruīna
(inherited)
→
Catalan
roinar
(affix)
→
Catalan
roinejar
(affix)