Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Bulgarian
пустиня
←
Bulgarian
пуст
(affix)
←
Bulgarian
-иня
(affix)
←
Proto-Slavic
*pustyni
(inherited)