Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Polish
słuchacz
←
Polish
słuchać
(suffix)
←
Polish
acz
(suffix)
→
Polish
słuchaczka
(suffix)
→
Ukrainian
слухач
(cognate)