Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Estonian
aina
←
Proto-Finnic
*aina
(inherited)
←
Lithuanian
vienat
(cognate)
→
Finnish
aina
(cognate)
→
Ingrian
ain
(cognate)