Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Slavic
*serdà
→
Bulgarian
сред
(cognate)
→
Hungarian
szerda
(derived)
→
Polabian
sredă
(inherited)
→
Silesian
strzoda
(inherited)