Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Indo-European
*septm̥-ḱómt-h₂
→
Greek
εβδομήντα
(inherited)
→
Ancient Greek
ἑβδομήκοντα
(inherited)