Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Galician
cristal
←
Ancient Greek
κρύσταλλος
(derived)
←
Ancient Greek
κρύος
(mention)
←
Latin
crystallum
(derived)
←
Old Portuguese
cristal
(inherited)