Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Bulgarian
крячка
←
Bulgarian
кря́кам
(affix)
←
Bulgarian
-ка
(affix)
←
Russian
кря́ква
(cognate)
←
Ukrainian
кря́чка
(cognate)