Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Bulgarian
смърт
←
Proto-Slavic
*sъmьrtь
(inherited)
→
Bulgarian
смъртен
(affix)
→
Bulgarian
смъртник
(affix)