Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Russian
авось
←
Old East Slavic
авосе
(inherited)
←
Old East Slavic
а
(affix)
←
Old East Slavic
осе
(affix)