Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Romanian
costa
←
Italian
costare
(borrowed)
←
Latin
constāre
(derived)
←
Latin
constō
(mention)
←
Romanian
custa
(doublet)
←
Romanian
consta
(mention)
→
Romanian
cost
(back-formation)
→
Romanian
consta
(mention)
→
Romanian
custa
(doublet)
→
Romanian
costisi
(suffix)