Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Church Slavonic
праздьникъ
←
Old Church Slavonic
праздьнъ
(affix)
←
Old Church Slavonic
-икъ
(affix)
←
Russian
пра́здник
(cognate)
→
Bulgarian
празник
(inherited)
→
Lower Sorbian
prozniny
(cognate)
→
Romanian
praznic
(derived)