Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Czech
sumec
←
Czech
(suffix)
←
Czech
-ec
(suffix)
←
Proto-Slavic
*somъ
(inherited)
→
Czech
sumčí
(affix)
→
Latvian
sams
(cognate)