Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Plains Cree
pihko
←
Proto-Algonquian
*penkwi
(inherited)
←
Proto-Algic
*penekwe
(inherited)
←
Quiripi
puckwe
(cognate)
←
Unami
punkw
(cognate)