Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Bengali
চন্দ্র
→
Bengali
চন্দ্রবিন্দু
(compound)
→
Bengali
চাঁদ
(doublet)
→
Bengali
চান
(doublet)