Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Czech
buvol
←
Proto-Slavic
*byvolъ
(inherited)
→
Czech
buvolí
(affix)
→
Lower Sorbian
buwoł
(cognate)