Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Czech
chochol
←
Proto-Slavic
*xoxolъ
(inherited)
←
Proto-Slavic
*koxolъ
(mention)
→
Czech
chocholouš
(affix)
→
Russian
хохол
(cognate)