Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Assamese
পশু
←
Proto-Indo-Iranian
*páću
(inherited)
←
Proto-Indo-Aryan
*páśu
(inherited)
←
Proto-Indo-European
*péḱu
(inherited)
←
Sanskrit
पशु
(inherited)
→
Assamese
পহু
(doublet)