Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Portuguese
senon
←
Old Portuguese
se
(mention)
←
Old Portuguese
non
(mention)
→
Galician
senón
(inherited)
→
Portuguese
senão
(inherited)