Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Rapa Nui
kau
←
Hawaiian
ʻau
(cognate)
←
Maori
kau
(cognate)
←
Proto-Polynesian
*kau
(inherited)