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