Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Church Slavonic
оугодьнъ
←
Old Church Slavonic
оу-
(compound)
←
Old Church Slavonic
годъ
(compound)
←
Old Church Slavonic
-ьнъ
(compound)