Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Galician
mega
→
Galician
megafonía
(prefix)
→
Galician
megalitro
(prefix)
→
Galician
megáfono
(confix)
→
Galician
megatenda
(prefix)
→
Galician
megagramo
(prefix)