Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Ancient Greek
ὁπότε
←
Ancient Greek
ὅς
(mention)
←
Ancient Greek
πότε
(mention)
←
Proto-Indo-European
*kʷ-
(root)
→
Greek
οπότε
(inherited)