Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Tamil
தேசம்
←
Malayalam
ദേശം
(cognate)
←
Sanskrit
देश
(derived)
←
Telugu
దేశము
(cognate)
→
Malayalam
ദേശം
(cognate)
→
Tamil
வங்காளதேசம்
(compound)