Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Erzya
ой
←
Moksha
вай
(cognate)
←
Proto-Mordvinic
*vaj
(inherited)
→
Finnish
voi
(cognate)
→
Erzya
кельмой
(compound)