Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Polish
średniowieczny
←
Polish
średniowiecze
(affix)
←
Polish
-ny
(affix)
→
Ukrainian
середньовічний
(cognate)