Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Tamil
இங்கிட்டு
←
Proto-Dravidian
*ī
(derived)
←
Malayalam
iṅṅōṭṭu
(cognate)
←
Tamil
இங்கு
(mention)