Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Rapa Nui
vaka
←
Proto-Polynesian
*waka
(inherited)
→
Rapa Nui
vakavaka
(mention)
→
Samoan
va'a
(cognate)