Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Polish
trzon
←
Proto-Slavic
*černъ
(inherited)
→
Czech
třeň
(borrowed)
→
Polish
trzonowiec
(suffix)
→
Polish
trzonek
(affix)
→
Silesian
strzōn
(cognate)