Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Indo-European
*bʰelH-
→
Bulgarian
блана
(cognate)
→
Greek
βάλτος
(derived)
→
Romanian
baltă
(mention)