Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Portuguese
mega
←
Ancient Greek
μέγας
(derived)
→
Portuguese
megapascal
(prefix)
→
Portuguese
megâmetro
(prefix)
→
Portuguese
megalitro
(prefix)
→
Portuguese
megagrama
(prefix)