Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Dravidian
*aṭaykkāy
→
Malayalam
അടയ്ക്ക
(inherited)
→
Portuguese
areca
(derived)
→
Tamil
அடைக்காய்
(inherited)