Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Indo-Iranian
*mā́tar-
→
Assamese
মা
(inherited)
→
Assamese
মাও
(inherited)
→
Early Assamese
মাৱ
(inherited)