Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Czech
koupit
←
Proto-Slavic
*kupiti
(inherited)
←
Old Czech
kúpiti
(inherited)
→
Czech
kupec
(affix)
→
Czech
vykoupit
(affix)
→
Czech
nakoupit
(affix)