Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Bengali
কেউ
←
Bengali
কেহু
(mention)
←
Sanskrit
किं
(derived)
→
Assamese
কেও
(cognate)
→
Hindi
कोई
(cognate)