Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Polish
kłapać
←
Polish
klapać
(doublet)
←
Proto-Slavic
*klapati
(inherited)
→
Polish
kłapnąć
(suffix)
→
Polish
klapać
(doublet)