Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Bulgarian
крън
←
Old Church Slavonic
крънъ
(cognate)
←
Proto-Indo-European
*(s)ker-
(cognate)
←
Proto-Slavic
*kъrnъ
(inherited)
→
Bulgarian
кърнак
(cognate)