Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Rapa Nui
kai
←
Proto-Austronesian
*kaən
(inherited)
←
Proto-Polynesian
*kai
(inherited)
←
Proto-Malayo-Polynesian
*kaən
(inherited)
→
Rapa Nui
pātia kai
(compound)