Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Polish
czczy
←
Proto-Slavic
*tъščь
(derived)
←
Old Polish
tszczy
(inherited)
→
Polish
czczo
(suffix)
→
Russian
тощий
(cognate)