Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
-gon
←
Ancient Greek
γωνία
(borrowed)
←
Proto-Indo-European
*ǵónu
(derived)
→
English
angle
(link)
→
English
hendecagon
(affix)
→
English
isogonism
(affix)
→
English
hexadecagon
(affix)
→
English
kilogon
(affix)