Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Russian
беспо́мощный
→
Russian
беспомощность
(suffix)
→
Russian
беспомощно
(suffix)
→
Ukrainian
безпомічний
(cognate)