Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Estonian
aer
←
Finnish
airo
(cognate)
←
Proto-Finnic
*airo
(inherited)
←
Proto-Germanic
*airō
(derived)
→
Finnish
airo
(cognate)
→
Ingrian
airo
(cognate)