Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Polish
półka
←
Polish
pół
(suffix)
←
Polish
ka
(suffix)
←
Polish
polka
(doublet)
←
Proto-Slavic
*polъka
(inherited)
→
Polish
polka
(doublet)