Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Polish
mnóstwo
←
Polish
mnogi
(suffix)
←
Polish
stwo
(suffix)
←
Proto-Slavic
*mъnožьstvo
(inherited)
←
Old Polish
mnożstwo
(inherited)