Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Church Slavonic
праздьнъ
←
Proto-Slavic
*porzdьnъ
(derived)
→
Old Church Slavonic
праздьникъ
(affix)
→
Romanian
praznic
(affix)
→
Romanian
prăznui
(mention)
→
Russian
праздный
(borrowed)