Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Portuguese
gema
←
Latin
gemma
(derived)
→
Galician
xema
(cognate)
→
Kabuverdianu
jéma
(derived)
→
Portuguese
gemada
(suffix)