Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Bengali
ছয়
←
Proto-Indo-European
*swéḱs
(derived)
←
Sanskrit
षष्
(derived)
→
Sylheti
ꠍꠄ
(cognate)