Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
trigonon
←
English
trigon
(doublet)
←
Ancient Greek
τρῐ́γωνον
(borrowed)
→
English
trigon
(doublet)