Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Czech
kudy
←
Proto-Slavic
*kǫda
(inherited)
→
Czech
někudy
(prefix)
→
Polish
kędy
(cognate)
→
Russian
куды
(cognate)