Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Kolami
ఆర్
←
Proto-Dravidian
*cāṯ-u
(inherited)
←
Kannada
ಆರು
(cognate)
←
Malayalam
ആര്
(cognate)
←
Tamil
ஆறு
(cognate)
←
Telugu
ఆరు
(cognate)