Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Romani
oxto
←
Proto-Hellenic
*oktṓ
(derived)
←
Proto-Indo-European
*oḱtṓw
(derived)
→
Kalo Finnish Romani
oȟta
(inherited)
→
Traveller Norwegian
åkta
(inherited)