Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Polish
średni
←
Proto-Slavic
*serdьnъ
(inherited)
→
Polish
średniowiecze
(affix)
→
Polish
średnia
(suffix)
→
Polish
średnio
(suffix)
→
Polish
średniówka
(suffix)
→
Polish
uśrednić
(affix)