Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Russian
средний
←
Old Church Slavonic
срѣдьнъ
(borrowed)
←
Russian
сере́дний
(doublet)
←
Russian
среда́
(affix)
←
Russian
-ний
(affix)
←
Proto-Slavic
*serdьnъ
(derived)