Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Catalan
vidu
←
Catalan
viudo
(mention)
←
Catalan
viuda
(mention)
←
Latin
viduus
(borrowed)
→
Catalan
viudo
(mention)