Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Church Slavonic
правьдьнъ
←
Old Church Slavonic
правьда
(affix)
←
Old Church Slavonic
-ьнъ
(affix)
←
Proto-Slavic
*pravьdьnъ
(inherited)