Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Slavic
*struga
→
Bulgarian
струга
(inherited)
→
Czech
strouha
(inherited)
→
Czech
struha
(inherited)
→
Polish
struga
(inherited)