Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Estonian
sõsar
←
Proto-Finnic
*sesar
(inherited)
←
Proto-Balto-Slavic
*swésō
(derived)
→
Estonian
sõtse
(mention)