Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Indo-Iranian
*čákšuš
→
Assamese
চকু
(inherited)
→
Assamese
চখু
(inherited)
→
Early Assamese
চক্ষু
(derived)
→
Sanskrit
चक्षु
(inherited)
→
Sylheti
ꠌꠃꠈ
(derived)