Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Serbo-Croatian
чекати
←
Proto-Slavic
*čekati
(inherited)
→
Bulgarian
чакам
(cognate)
→
Serbo-Croatian
сачекати
(prefix)
→
Serbo-Croatian
дочекати
(prefix)