Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Polish
oba
←
Proto-Slavic
*oba
(inherited)
→
Latvian
abi
(cognate)
→
Polish
obosieczny
(affix)