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