Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Polish
obecny
←
Proto-Slavic
*obьťьnъ
(inherited)
←
Proto-Slavic
*obьťina
(mention)
←
Proto-Slavic
*obьťь
(mention)
←
Old Czech
obecný
(mention)
→
Polish
obecnie
(suffix)
→
Polish
obecność
(suffix)
→
Polish
wszechobecny
(prefix)
→
Polish
Obecny
(mention)