Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Czech
ostrouhat
←
Czech
o-
(affix)
←
Czech
strouhat
(affix)
←
Proto-Slavic
*ostrugati
(inherited)
←
Old Czech
ostrúhati
(inherited)