Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Romanian
chiar
←
Proto-Indo-European
*kelh₁-
(derived)
←
Latin
clārus
(inherited)
←
Latin
pure
(cognate)
←
Latin
purus
(mention)
←
Romanian
clar
(doublet)
←
Romanian
chior
(mention)
→
Romanian
clar
(doublet)