Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Slavic
*čęti
→
Russian
конец
(mention)
→
Serbo-Croatian
početi
(mention)
→
Serbo-Croatian
počati
(derived)
→
Serbo-Croatian
почети
(derived)