Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Galician
estudo
←
Latin
studium
(derived)
←
Old Portuguese
estudo
(inherited)
←
Old Portuguese
estudio
(mention)
←
Old Portuguese
studo
(mention)