Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Czech
krtek
←
Czech
krt
(affix)
←
Czech
-ek
(affix)
→
Czech
krtčí
(affix)
→
Lower Sorbian
kšet
(cognate)