Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Indo-European
*h₁élḱos
→
Ancient Greek
ἕλκος
(inherited)
→
Latin
ulcus
(inherited)
→
Sanskrit
अर्शस्
(inherited)