Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Ukrainian
демонструвати
←
Belarusian
дэманстрава́ць
(cognate)
←
Polish
demonstrować
(cognate)
←
Russian
демонстри́ровать
(cognate)