Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Slavic
*klenь
→
Macedonian
клен
(inherited)
→
Polish
kleń
(inherited)
→
Romanian
clean
(derived)
→
Serbo-Croatian
клен
(inherited)
→
Serbo-Croatian
klen
(inherited)
→
Slovene
klen
(inherited)