Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Dravidian
*on-patV
→
Kannada
ಒಂಬತ್ತು
(inherited)
→
Malayalam
ഒമ്പത്
(inherited)
→
Tamil
ஒன்பது
(inherited)