Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Galician
estremo
←
Galician
extremo
(doublet)
←
Latin
extrēmus
(derived)
→
Galician
estrema
(mention)
→
Galician
estremar
(suffix)