Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Bulgarian
веселие
←
Bulgarian
весе́л
(affix)
←
Bulgarian
-ие
(affix)
←
Old Church Slavonic
весельѥ
(inherited)
←
Russian
весе́лье
(cognate)