Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Polish
forum
←
Proto-Indo-European
*dʰworom
(derived)
←
Proto-Indo-European
*dʰwer-
(mention)
←
Latin
forum
(derived)
←
Polish
dwór
(doublet)
→
Polish
dwór
(doublet)
→
Polish
forumowicz
(suffix)