Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Italian
ottagono
←
Ancient Greek
ὀκτάγωνον
(borrowed)
←
Ancient Greek
ὀκτάγωνος
(mention)
→
English
octagon
(mention)
→
Italian
ottagonale
(affix)