Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Serbo-Croatian
-ар
←
Proto-Slavic
*-ařь
(inherited)
→
Serbo-Croatian
другар
(affix)
→
Serbo-Croatian
сликар
(affix)
→
Serbo-Croatian
мухар
(affix)