Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Bulgarian
пряпорец
←
Bulgarian
пря́пор
(affix)
←
Bulgarian
-ец
(affix)
←
Bulgarian
пра́порец
(cognate)
←
Czech
prapořec
(cognate)
←
Serbo-Croatian
пра̀порац
(cognate)
←
Slovene
práporec
(cognate)
←
Proto-Slavic
*perporьcь
(inherited)
←
Proto-Slavic
*porporьcь
(cognate)