Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Sylheti
ꠀꠘꠗꠣꠁꠞ
←
Assamese
আন্ধাৰ
(cognate)
←
Bengali
আঁধার
(cognate)
←
Sanskrit
अन्धकार
(inherited)