Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Portuguese
rojão
←
Portuguese
rojar
(affix)
←
Portuguese
-ão
(affix)
←
Portuguese
rojo
(affix)
←
Portuguese
-ão
(affix)
→
Galician
roxón
(cognate)
→
Portuguese
rojar
(link)