Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Portuguese
froco
←
Latin
floccus
(derived)
←
Portuguese
floco
(doublet)
→
English
frog
(borrowed)
→
Portuguese
floco
(doublet)