Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old East Slavic
брѣза
←
Old East Slavic
береза
(doublet)
←
Proto-Slavic
*berza
(derived)
→
Old East Slavic
береза
(doublet)