Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Tamil
அத்தை
←
Proto-Dravidian
*atta
(inherited)
←
Telugu
అత్త
(cognate)
→
Telugu
అత్త
(cognate)