Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Estonian
era-
←
Estonian
eraldi
(mention)
←
Estonian
eri
(mention)
←
Proto-Indo-Iranian
*er-
(derived)
→
Estonian
eramu
(suffix)