Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Polish
wiesioły
←
Proto-Slavic
*veselъ
(inherited)
→
Polish
wesoły
(inherited)
→
Polish
wiesiołek
(derived)