Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Catalan
l'Alguer
←
Catalan
alga
(suffix)
←
Catalan
er
(suffix)
←
Proto-Indo-European
*alg-
(inherited)
←
Proto-Indo-European
*alǵ-
(mention)
←
Latin
alga
(inherited)
→
Catalan
alguerès
(suffix)
→
Spanish
Alguer
(borrowed)