Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Basque
landa
←
Proto-Celtic
*landā
(derived)
←
Spanish
landa
(borrowed)
←
Occitan
landa
(borrowed)
→
Spanish
Landa
(mention)