Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Indo-European
*plak-
→
Galician
chaga
(derived)
→
Portuguese
plangente
(mention)
→
Portuguese
chaga
(derived)
→
Portuguese
praga
(derived)