Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Bulgarian
злато
←
Bulgarian
злат
(affix)
←
Bulgarian
-о
(affix)
←
Proto-Slavic
*zolto
(inherited)
→
Bulgarian
златен
(suffix)
→
Bulgarian
позлата
(affix)
→
Old Church Slavonic
злато
(cognate)