Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Ukrainian
посередництво
←
Belarusian
пасрэ́дніцтва
(cognate)
←
Polish
pośrednictwo
(cognate)
←
Russian
посре́дничество
(cognate)
←
Ukrainian
посере́дник
(affix)
←
Ukrainian
-цтво
(affix)