Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Polish
niepotrzebny
←
Polish
nie
(prefix)
←
Polish
potrzebny
(prefix)
→
Polish
niepotrzebnie
(affix)
→
Ukrainian
непотрібний
(cognate)