Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Tamil
நதி
←
Sanskrit
नदी
(borrowed)
←
Sanskrit
नति
(borrowed)
→
Tamil
நதிகேள்வன்
(compound)
→
Telugu
నది
(cognate)