Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Slavic
*pьstrǫgъ
→
Czech
pstruh
(inherited)
→
Polish
pstrąg
(inherited)
→
Vilamovian
pstrong
(derived)