Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Polish
tężeć
←
Polish
tęgi
(affix)
←
Polish
-eć
(affix)
→
Polish
tężec
(affix)
→
Polish
stężeć
(affix)