Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Church Slavonic
старость
←
Proto-Slavic
*starostь
(inherited)
←
Proto-Slavic
*starъ
(suffix)
←
Proto-Slavic
*ostь
(suffix)