Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Catalan
tómbol
←
Catalan
túmul
(doublet)
←
Italian
tombolo
(borrowed)
←
Latin
tumulus
(derived)
→
Catalan
túmul
(doublet)