Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Indo-European
*h₁elk-
→
English
ill
(derived)
→
Westrobothnian
ill
(derived)
→
Old Norse
illr
(derived)