Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Belarusian
тлусты
←
Belarusian
то́ўсты
(doublet)
←
Polish
tłusty
(borrowed)
←
Proto-Slavic
*tъlstъ
(derived)