Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Czech
hladký
←
Proto-Slavic
*gladъkъ
(inherited)
←
Old Czech
hladký
(inherited)
→
English
Hladki
(derived)
→
Czech
hladkost
(suffix)
→
Lower Sorbian
gładki
(cognate)