Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Indo-European
*teter
→
Assamese
তিতৰ
(inherited)
→
Assamese
তিতৌ
(inherited)
→
Sanskrit
तित्तिर
(inherited)