Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Italian
mega-
←
Ancient Greek
μέγας
(derived)
→
Italian
megawatt
(affix)
→
Italian
megavolt
(affix)
→
Italian
megabit
(affix)
→
Italian
megacolon
(affix)