Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Bulgarian
съчка
←
Old Church Slavonic
сѫчьць
(cognate)
←
Proto-Slavic
(inherited)
←
Proto-Slavic
*sǫ̑kъ
(mention)
→
Old Church Slavonic
сѫкъ
(cognate)