Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Polish
sęk
←
Proto-Slavic
*sǫkъ
(inherited)
→
Polish
Sęk
(mention)
→
Polish
Sękiewicz
(suffix)
→
Polish
osęka
(link)
→
Polish
osęk
(link)