Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Tamil
நாகம்
←
Sanskrit
नाग
(borrowed)
←
Sanskrit
नाक
(borrowed)
→
Tamil
செட்டிநாகம்
(compound)