Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Tamil
காக்கை
←
Kannada
ಕಾಕ
(cognate)
←
Malayalam
കാക്ക
(cognate)
←
Telugu
కాకి
(cognate)
→
Tamil
நீர்க்காக்கை
(affix)