Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Estonian
ader
←
Proto-Finnic
*atra
(inherited)
→
Finnish
aura
(cognate)
→
Ingrian
adra
(cognate)
→
Livvi
adru
(cognate)