Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Estonian
roe
←
Finnish
ruoja
(cognate)
←
Proto-Finnic
*rooja
(inherited)
←
Votic
rooja
(cognate)
→
Estonian
roojama
(suffix)
→
Estonian
roojane
(suffix)