Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Northern Puebla Nahuatl
yiyi
←
Proto-Uto-Aztecan
*pahi
(inherited)
←
Classical Nahuatl
ēyi
(cognate)