Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Karelian
ratas
←
Proto-Finnic
*rat'as
(inherited)
←
Proto-Indo-European
*Hret-
(derived)
←
Lithuanian
rãtas
(cognate)