Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Bulgarian
дяна
←
Bulgarian
де́я
(affix)
←
Bulgarian
-на
(affix)
←
Proto-Slavic
*děnǫti
(inherited)