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