Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Polish
lęk
→
Polish
lękowy
(affix)
→
Polish
lękliwy
(suffix)
→
Polish
zlęknąć
(affix)
→
Polish
przelęknąć
(affix)