Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Belarusian
дзе́сяць
→
Belarusian
дзесяцігоддзе
(affix)
→
Ukrainian
десять
(cognate)