Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Czech
mladý
←
Proto-Slavic
*moldъ
(inherited)
←
Old Czech
mladý
(inherited)
→
Czech
mládež
(affix)
→
Czech
mladík
(affix)