Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Polish
heros
←
Ancient Greek
ἥρως
(derived)
←
Latin
hērōs
(borrowed)
←
Polish
gieroj
(doublet)
→
Polish
gieroj
(doublet)