Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Ukrainian
середньовіччя
←
Belarusian
сярэдняве́чча
(cognate)
←
Polish
średniowiecze
(cognate)
←
Ukrainian
сере́дньо
(affix)
←
Ukrainian
вік
(affix)
←
Ukrainian
-я
(affix)