Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Latin
*-aecus
→
Galician
Galiza
(mention)
→
Galician
galego
(mention)
→
Latin
Gallaeci
(mention)
→
Latin
gallaecus
(mention)