Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Czech
struna
←
Proto-Slavic
*struna
(inherited)
→
Czech
strunný
(affix)
→
Czech
strunový
(affix)
→
Czech
superstruna
(affix)
→
Romanian
strună
(cognate)