Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Estonian
selg
←
Proto-Finnic
*selkä
(inherited)
→
Estonian
seljak
(suffix)
→
Estonian
seljaaju
(compound)
→
Finnish
selkä
(cognate)
→
Ingrian
selkä
(cognate)
→
Latvian
selga
(cognate)