Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Church Slavonic
-тель
←
Proto-Slavic
*-teľь
(inherited)
→
Old Church Slavonic
житель
(affix)
→
Russian
-тель
(cognate)