Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Portuguese
-gamia
←
Ancient Greek
γάμος
(derived)
→
Portuguese
poligamia
(affix)
→
Portuguese
monogamia
(affix)
→
Portuguese
endogamia
(affix)
→
Portuguese
heterogamia
(affix)
→
Portuguese
adelfogamia
(affix)
→
Portuguese
anisogamia
(affix)
→
Portuguese
sologamia
(affix)