Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Galician
rexo
←
Galician
recio
(doublet)
←
Latin
rigidus
(inherited)
←
Latin
rigeō
(mention)
←
Portuguese
rijo
(cognate)
←
Old Portuguese
rigio
(inherited)