Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Tamil
அவ்விடம்
←
Proto-Dravidian
*a-
(derived)
←
Tamil
அ
(compound)
←
Tamil
இடம்
(compound)