Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Russian
правди́вый
→
Russian
правдиво
(affix)
→
Russian
правдивость
(affix)
→
Ukrainian
правдивий
(cognate)