Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Polish
zapewniać
←
Polish
zapewnić
(suffix)
←
Polish
ać
(suffix)
→
Belarusian
запэўніваць
(cognate)
→
Ukrainian
запевняти
(cognate)